diff --git a/src/fuchsia/mod.rs b/src/fuchsia/mod.rs
index 51abedcb8fc10..20bf7401e570f 100644
--- a/src/fuchsia/mod.rs
+++ b/src/fuchsia/mod.rs
@@ -3076,9 +3076,9 @@ f! {
 
     pub fn CMSG_NXTHDR(mhdr: *const msghdr, cmsg: *const cmsghdr) -> *mut cmsghdr {
         if ((*cmsg).cmsg_len as size_t) < size_of::<cmsghdr>() {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         } else if __CMSG_NEXT(cmsg).add(size_of::<cmsghdr>()) >= __MHDR_END(mhdr) {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         } else {
             __CMSG_NEXT(cmsg).cast()
         }
@@ -3088,7 +3088,7 @@ f! {
         if (*mhdr).msg_controllen as size_t >= size_of::<cmsghdr>() {
             (*mhdr).msg_control.cast()
         } else {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         }
     }
 
diff --git a/src/new/qurt/mod.rs b/src/new/qurt/mod.rs
index 52d7ae04881e1..41ce4b50ba0ac 100644
--- a/src/new/qurt/mod.rs
+++ b/src/new/qurt/mod.rs
@@ -236,7 +236,7 @@ pub const FOPEN_MAX: c_uint = 20;
 pub const EOK: c_int = 0;
 
 // Semaphore constants
-pub const SEM_FAILED: *mut sem_t = 0 as *mut sem_t;
+pub const SEM_FAILED: *mut sem_t = ptr::null_mut();
 
 // Page size constants (hexagon-specific)
 pub const PAGESIZE: size_t = 4096;
diff --git a/src/unix/aix/mod.rs b/src/unix/aix/mod.rs
index 987eadf2465cc..04df0b6ba336d 100644
--- a/src/unix/aix/mod.rs
+++ b/src/unix/aix/mod.rs
@@ -2415,7 +2415,7 @@ f! {
         if (*mhdr).msg_controllen as usize >= size_of::<cmsghdr>() {
             (*mhdr).msg_control as *mut cmsghdr
         } else {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         }
     }
 
@@ -2426,7 +2426,7 @@ f! {
             if (cmsg as usize + (*cmsg).cmsg_len as usize + size_of::<cmsghdr>())
                 > ((*mhdr).msg_control as usize + (*mhdr).msg_controllen as usize)
             {
-                core::ptr::null_mut::<cmsghdr>()
+                ptr::null_mut()
             } else {
                 // AIX does not have any alignment/padding for ancillary data, so we don't need _CMSG_ALIGN here.
                 (cmsg as usize + (*cmsg).cmsg_len as usize) as *mut cmsghdr
diff --git a/src/unix/bsd/apple/mod.rs b/src/unix/bsd/apple/mod.rs
index 69321b7086f74..78c93a84a66c6 100644
--- a/src/unix/bsd/apple/mod.rs
+++ b/src/unix/bsd/apple/mod.rs
@@ -4068,7 +4068,7 @@ f! {
         let next = cmsg as usize + __DARWIN_ALIGN32(cmsg_len);
         let max = (*mhdr).msg_control as usize + (*mhdr).msg_controllen as usize;
         if next + __DARWIN_ALIGN32(size_of::<cmsghdr>()) > max {
-            core::ptr::null_mut()
+            ptr::null_mut()
         } else {
             next as *mut cmsghdr
         }
diff --git a/src/unix/bsd/freebsdlike/dragonfly/mod.rs b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
index 386da7de3279d..22cb415f9b552 100644
--- a/src/unix/bsd/freebsdlike/dragonfly/mod.rs
+++ b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
@@ -1191,7 +1191,7 @@ f! {
         if next <= max {
             (cmsg as usize + _CMSG_ALIGN((*cmsg).cmsg_len as usize)) as *mut cmsghdr
         } else {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         }
     }
 
diff --git a/src/unix/bsd/freebsdlike/freebsd/mod.rs b/src/unix/bsd/freebsdlike/freebsd/mod.rs
index 3a3f8076bb51e..af0a1b7558ec8 100644
--- a/src/unix/bsd/freebsdlike/freebsd/mod.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/mod.rs
@@ -4198,7 +4198,7 @@ f! {
         let next = cmsg as usize + _ALIGN((*cmsg).cmsg_len as usize) + _ALIGN(size_of::<cmsghdr>());
         let max = (*mhdr).msg_control as usize + (*mhdr).msg_controllen as usize;
         if next > max {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         } else {
             (cmsg as usize + _ALIGN((*cmsg).cmsg_len as usize)) as *mut cmsghdr
         }
diff --git a/src/unix/bsd/mod.rs b/src/unix/bsd/mod.rs
index 74a6fa8142b27..e890388032bdf 100644
--- a/src/unix/bsd/mod.rs
+++ b/src/unix/bsd/mod.rs
@@ -497,7 +497,7 @@ f! {
         if (*mhdr).msg_controllen as usize >= size_of::<cmsghdr>() {
             (*mhdr).msg_control.cast::<cmsghdr>()
         } else {
-            core::ptr::null_mut()
+            ptr::null_mut()
         }
     }
 
diff --git a/src/unix/bsd/netbsdlike/netbsd/mod.rs b/src/unix/bsd/netbsdlike/netbsd/mod.rs
index 50e45dbebe737..e1deca9e387b2 100644
--- a/src/unix/bsd/netbsdlike/netbsd/mod.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/mod.rs
@@ -1330,20 +1330,20 @@ cfg_if! {
             ptm_pad1: Padding::new([0; 3]),
             ptm_unused: Padding::new(0),
             ptm_pad2: Padding::new([0; 3]),
-            ptm_waiters: 0 as *mut _,
+            ptm_waiters: ptr::null_mut(),
             ptm_owner: 0,
             ptm_recursed: 0,
-            ptm_spare2: 0 as *mut _,
+            ptm_spare2: ptr::null_mut(),
         };
     } else {
         pub const PTHREAD_MUTEX_INITIALIZER: pthread_mutex_t = pthread_mutex_t {
             ptm_magic: 0x33330003,
             ptm_errorcheck: 0,
             ptm_unused: Padding::new(0),
-            ptm_waiters: 0 as *mut _,
+            ptm_waiters: ptr::null_mut(),
             ptm_owner: 0,
             ptm_recursed: 0,
-            ptm_spare2: 0 as *mut _,
+            ptm_spare2: ptr::null_mut(),
         };
     }
 }
@@ -1351,21 +1351,21 @@ cfg_if! {
 pub const PTHREAD_COND_INITIALIZER: pthread_cond_t = pthread_cond_t {
     ptc_magic: 0x55550005,
     ptc_lock: 0,
-    ptc_waiters_first: 0 as *mut _,
-    ptc_waiters_last: 0 as *mut _,
-    ptc_mutex: 0 as *mut _,
-    ptc_private: 0 as *mut _,
+    ptc_waiters_first: ptr::null_mut(),
+    ptc_waiters_last: ptr::null_mut(),
+    ptc_mutex: ptr::null_mut(),
+    ptc_private: ptr::null_mut(),
 };
 pub const PTHREAD_RWLOCK_INITIALIZER: pthread_rwlock_t = pthread_rwlock_t {
     ptr_magic: 0x99990009,
     ptr_interlock: 0,
-    ptr_rblocked_first: 0 as *mut _,
-    ptr_rblocked_last: 0 as *mut _,
-    ptr_wblocked_first: 0 as *mut _,
-    ptr_wblocked_last: 0 as *mut _,
+    ptr_rblocked_first: ptr::null_mut(),
+    ptr_rblocked_last: ptr::null_mut(),
+    ptr_wblocked_first: ptr::null_mut(),
+    ptr_wblocked_last: ptr::null_mut(),
     ptr_nreaders: 0,
     ptr_owner: 0,
-    ptr_private: 0 as *mut _,
+    ptr_private: ptr::null_mut(),
 };
 pub const PTHREAD_MUTEX_NORMAL: c_int = 0;
 pub const PTHREAD_MUTEX_ERRORCHECK: c_int = 1;
@@ -1824,7 +1824,7 @@ f! {
         let next = cmsg as usize + _ALIGN((*cmsg).cmsg_len as usize) + _ALIGN(size_of::<cmsghdr>());
         let max = (*mhdr).msg_control as usize + (*mhdr).msg_controllen as usize;
         if next > max {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         } else {
             (cmsg as usize + _ALIGN((*cmsg).cmsg_len as usize)) as *mut cmsghdr
         }
diff --git a/src/unix/bsd/netbsdlike/openbsd/mod.rs b/src/unix/bsd/netbsdlike/openbsd/mod.rs
index e642ef18ebc27..3fd9c3ede615f 100644
--- a/src/unix/bsd/netbsdlike/openbsd/mod.rs
+++ b/src/unix/bsd/netbsdlike/openbsd/mod.rs
@@ -1836,7 +1836,7 @@ f! {
         let next = cmsg as usize + _ALIGN((*cmsg).cmsg_len as usize) + _ALIGN(size_of::<cmsghdr>());
         let max = (*mhdr).msg_control as usize + (*mhdr).msg_controllen as usize;
         if next > max {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         } else {
             (cmsg as usize + _ALIGN((*cmsg).cmsg_len as usize)) as *mut cmsghdr
         }
diff --git a/src/unix/cygwin/mod.rs b/src/unix/cygwin/mod.rs
index 56ee0a5d105e7..2ca5232ad4168 100644
--- a/src/unix/cygwin/mod.rs
+++ b/src/unix/cygwin/mod.rs
@@ -1020,7 +1020,7 @@ pub const LC_TIME_MASK: c_int = 1 << 5;
 pub const LC_MESSAGES_MASK: c_int = 1 << 6;
 pub const LC_GLOBAL_LOCALE: locale_t = -1isize as locale_t;
 
-pub const SEM_FAILED: *mut sem_t = core::ptr::null_mut();
+pub const SEM_FAILED: *mut sem_t = ptr::null_mut();
 
 pub const ST_RDONLY: c_ulong = 0x80000;
 pub const ST_NOSUID: c_ulong = 0;
@@ -1759,7 +1759,7 @@ f! {
         if (*mhdr).msg_controllen as usize >= size_of::<cmsghdr>() {
             (*mhdr).msg_control.cast()
         } else {
-            core::ptr::null_mut()
+            ptr::null_mut()
         }
     }
 
@@ -1767,7 +1767,7 @@ f! {
         let next = (cmsg as usize + CMSG_ALIGN((*cmsg).cmsg_len as usize)) as *mut cmsghdr;
         let max = (*mhdr).msg_control as usize + (*mhdr).msg_controllen as usize;
         if next as usize + CMSG_ALIGN(size_of::<cmsghdr>()) as usize > max {
-            core::ptr::null_mut()
+            ptr::null_mut()
         } else {
             next
         }
diff --git a/src/unix/haiku/mod.rs b/src/unix/haiku/mod.rs
index 8fae6f704d357..fda817ea7df65 100644
--- a/src/unix/haiku/mod.rs
+++ b/src/unix/haiku/mod.rs
@@ -1097,7 +1097,7 @@ pub const PTHREAD_MUTEX_INITIALIZER: pthread_mutex_t = pthread_mutex_t {
 pub const PTHREAD_COND_INITIALIZER: pthread_cond_t = pthread_cond_t {
     flags: 0,
     unused: Padding::new(0),
-    mutex: 0 as *mut _,
+    mutex: ptr::null_mut(),
     waiter_count: 0,
     lock: 0,
 };
@@ -1108,7 +1108,7 @@ pub const PTHREAD_RWLOCK_INITIALIZER: pthread_rwlock_t = pthread_rwlock_t {
     lock_count: 0,
     reader_count: 0,
     writer_count: 0,
-    waiters: [0 as *mut _; 2],
+    waiters: [ptr::null_mut(); 2],
 };
 
 pub const PTHREAD_MUTEX_DEFAULT: c_int = 0;
@@ -1385,7 +1385,7 @@ f! {
         if (*mhdr).msg_controllen as usize >= size_of::<cmsghdr>() {
             (*mhdr).msg_control as *mut cmsghdr
         } else {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         }
     }
 
@@ -1410,7 +1410,7 @@ f! {
             + CMSG_ALIGN(size_of::<cmsghdr>());
         let max = (*mhdr).msg_control as usize + (*mhdr).msg_controllen as usize;
         if next > max {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         } else {
             (cmsg as usize + CMSG_ALIGN((*cmsg).cmsg_len as usize)) as *mut cmsghdr
         }
diff --git a/src/unix/haiku/native.rs b/src/unix/haiku/native.rs
index 99ceab8a7519b..9c86f72638a3c 100644
--- a/src/unix/haiku/native.rs
+++ b/src/unix/haiku/native.rs
@@ -905,7 +905,7 @@ pub const B_XATTR_TYPE: u32 = haiku_constant!('X', 'A', 'T', 'R');
 pub const B_NETWORK_ADDRESS_TYPE: u32 = haiku_constant!('N', 'W', 'A', 'D');
 pub const B_MIME_STRING_TYPE: u32 = haiku_constant!('M', 'I', 'M', 'S');
 pub const B_ASCII_TYPE: u32 = haiku_constant!('T', 'E', 'X', 'T');
-pub const B_APP_IMAGE_SYMBOL: *const c_void = core::ptr::null();
+pub const B_APP_IMAGE_SYMBOL: *const c_void = ptr::null();
 
 extern "C" {
     // kernel/OS.h
diff --git a/src/unix/hurd/mod.rs b/src/unix/hurd/mod.rs
index af86822c634b3..73778e4ec045a 100644
--- a/src/unix/hurd/mod.rs
+++ b/src/unix/hurd/mod.rs
@@ -3336,19 +3336,19 @@ pub const PTHREAD_MUTEX_INITIALIZER: pthread_mutex_t = pthread_mutex_t {
 };
 pub const PTHREAD_COND_INITIALIZER: pthread_cond_t = pthread_cond_t {
     __lock: __PTHREAD_SPIN_LOCK_INITIALIZER,
-    __queue: 0i64 as *mut __pthread,
-    __attr: 0i64 as *mut __pthread_condattr,
+    __queue: ptr::null_mut(),
+    __attr: ptr::null_mut(),
     __wrefs: 0,
-    __data: 0i64 as *mut c_void,
+    __data: ptr::null_mut(),
 };
 pub const PTHREAD_RWLOCK_INITIALIZER: pthread_rwlock_t = pthread_rwlock_t {
     __held: __PTHREAD_SPIN_LOCK_INITIALIZER,
     __lock: __PTHREAD_SPIN_LOCK_INITIALIZER,
     __readers: 0,
-    __readerqueue: 0i64 as *mut __pthread,
-    __writerqueue: 0i64 as *mut __pthread,
-    __attr: 0i64 as *mut __pthread_rwlockattr,
-    __data: 0i64 as *mut c_void,
+    __readerqueue: ptr::null_mut(),
+    __writerqueue: ptr::null_mut(),
+    __attr: ptr::null_mut(),
+    __data: ptr::null_mut(),
 };
 pub const PTHREAD_STACK_MIN: size_t = 0;
 
@@ -3365,7 +3365,7 @@ f! {
         if (*mhdr).msg_controllen as usize >= size_of::<cmsghdr>() {
             (*mhdr).msg_control.cast::<cmsghdr>()
         } else {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         }
     }
 
@@ -3383,14 +3383,14 @@ f! {
 
     pub fn CMSG_NXTHDR(mhdr: *const msghdr, cmsg: *const cmsghdr) -> *mut cmsghdr {
         if ((*cmsg).cmsg_len as usize) < size_of::<cmsghdr>() {
-            return core::ptr::null_mut::<cmsghdr>();
+            return ptr::null_mut();
         }
         let next = (cmsg as usize + CMSG_ALIGN((*cmsg).cmsg_len as usize)) as *mut cmsghdr;
         let max = (*mhdr).msg_control as usize + (*mhdr).msg_controllen as usize;
         if (next.offset(1)) as usize > max
             || next as usize + CMSG_ALIGN((*next).cmsg_len as usize) > max
         {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         } else {
             next.cast::<cmsghdr>()
         }
diff --git a/src/unix/linux_like/android/mod.rs b/src/unix/linux_like/android/mod.rs
index 6a2f1bcf8cf51..caa55c68bfccc 100644
--- a/src/unix/linux_like/android/mod.rs
+++ b/src/unix/linux_like/android/mod.rs
@@ -3283,7 +3283,7 @@ f! {
         let next = (cmsg as usize + super::CMSG_ALIGN((*cmsg).cmsg_len as usize)) as *mut cmsghdr;
         let max = (*mhdr).msg_control as usize + (*mhdr).msg_controllen as usize;
         if (next.offset(1)) as usize > max {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         } else {
             next as *mut cmsghdr
         }
diff --git a/src/unix/linux_like/emscripten/mod.rs b/src/unix/linux_like/emscripten/mod.rs
index a97e772f99e75..4d67d55ffdc50 100644
--- a/src/unix/linux_like/emscripten/mod.rs
+++ b/src/unix/linux_like/emscripten/mod.rs
@@ -1253,12 +1253,12 @@ pub const SOMAXCONN: c_int = 128;
 f! {
     pub fn CMSG_NXTHDR(mhdr: *const msghdr, cmsg: *const cmsghdr) -> *mut cmsghdr {
         if ((*cmsg).cmsg_len as usize) < size_of::<cmsghdr>() {
-            return core::ptr::null_mut::<cmsghdr>();
+            return ptr::null_mut();
         }
         let next = (cmsg as usize + super::CMSG_ALIGN((*cmsg).cmsg_len as usize)) as *mut cmsghdr;
         let max = (*mhdr).msg_control as usize + (*mhdr).msg_controllen as usize;
         if (next.offset(1)) as usize >= max {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         } else {
             next as *mut cmsghdr
         }
diff --git a/src/unix/linux_like/l4re/uclibc/mod.rs b/src/unix/linux_like/l4re/uclibc/mod.rs
index e593ad76d4fc2..b3dba2c37766c 100644
--- a/src/unix/linux_like/l4re/uclibc/mod.rs
+++ b/src/unix/linux_like/l4re/uclibc/mod.rs
@@ -456,7 +456,7 @@ pub const __LOCK_INITIALIZER: _pthread_fastlock = _pthread_fastlock {
 pub const PTHREAD_MUTEX_INITIALIZER: pthread_mutex_t = pthread_mutex_t {
     __m_reserved: 0,
     __m_count: 0,
-    __m_owner: core::ptr::null_mut(),
+    __m_owner: ptr::null_mut(),
     __m_kind: PTHREAD_MUTEX_TIMED_NP,
     __m_lock: __LOCK_INITIALIZER,
 };
@@ -468,7 +468,7 @@ const PTHREAD_COND_PADDING_SIZE: usize = 48
 
 pub const PTHREAD_COND_INITIALIZER: pthread_cond_t = pthread_cond_t {
     __c_lock: __LOCK_INITIALIZER,
-    __c_waiting: core::ptr::null_mut(),
+    __c_waiting: ptr::null_mut(),
     __padding: [0; PTHREAD_COND_PADDING_SIZE],
     __align: 0,
 };
@@ -476,9 +476,9 @@ pub const PTHREAD_COND_INITIALIZER: pthread_cond_t = pthread_cond_t {
 pub const PTHREAD_RWLOCK_INITIALIZER: pthread_rwlock_t = pthread_rwlock_t {
     __rw_lock: __LOCK_INITIALIZER,
     __rw_readers: 0,
-    __rw_writer: core::ptr::null_mut(),
-    __rw_read_waiting: core::ptr::null_mut(),
-    __rw_write_waiting: core::ptr::null_mut(),
+    __rw_writer: ptr::null_mut(),
+    __rw_read_waiting: ptr::null_mut(),
+    __rw_write_waiting: ptr::null_mut(),
     __rw_kind: PTHREAD_RWLOCK_DEFAULT_NP,
     __rw_pshared: crate::PTHREAD_PROCESS_PRIVATE,
 };
diff --git a/src/unix/linux_like/linux_l4re_shared.rs b/src/unix/linux_like/linux_l4re_shared.rs
index 6b320ff4effa2..041e2525d9bc8 100644
--- a/src/unix/linux_like/linux_l4re_shared.rs
+++ b/src/unix/linux_like/linux_l4re_shared.rs
@@ -1485,7 +1485,7 @@ f! {
         cmsg: *const crate::cmsghdr,
     ) -> *mut crate::cmsghdr {
         if ((*cmsg).cmsg_len as usize) < size_of::<crate::cmsghdr>() {
-            return core::ptr::null_mut::<crate::cmsghdr>();
+            return ptr::null_mut();
         }
 
         // FIXME(msrv): `.wrapping_byte_add()` stabilized in 1.75
@@ -1497,7 +1497,7 @@ f! {
         // In case the addition wrapped. `next_addr > max_addr`
         // would otherwise not work as intended.
         if (next_cmsg as usize) < (cmsg as usize) {
-            return core::ptr::null_mut();
+            return ptr::null_mut();
         }
 
         let mut max_addr = (*mhdr).msg_control as usize + (*mhdr).msg_controllen as usize;
@@ -1510,7 +1510,7 @@ f! {
         }
 
         if next_cmsg as usize + size_of::<crate::cmsghdr>() > max_addr {
-            core::ptr::null_mut::<crate::cmsghdr>()
+            ptr::null_mut()
         } else {
             next_cmsg as *mut crate::cmsghdr
         }
diff --git a/src/unix/linux_like/mod.rs b/src/unix/linux_like/mod.rs
index 7b8397d1c7bad..73c837a92ab78 100644
--- a/src/unix/linux_like/mod.rs
+++ b/src/unix/linux_like/mod.rs
@@ -1791,7 +1791,7 @@ f! {
         if (*mhdr).msg_controllen as usize >= size_of::<crate::cmsghdr>() {
             (*mhdr).msg_control.cast::<crate::cmsghdr>()
         } else {
-            core::ptr::null_mut::<crate::cmsghdr>()
+            ptr::null_mut()
         }
     }
 
diff --git a/src/unix/nto/mod.rs b/src/unix/nto/mod.rs
index 082e48739fe35..0a1f1bf29d14b 100644
--- a/src/unix/nto/mod.rs
+++ b/src/unix/nto/mod.rs
@@ -2429,7 +2429,7 @@ f! {
         if (*mhdr).msg_controllen as usize >= size_of::<cmsghdr>() {
             (*mhdr).msg_control as *mut cmsghdr
         } else {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         }
     }
 
@@ -2437,7 +2437,7 @@ f! {
         let msg = _CMSG_ALIGN((*cmsg).cmsg_len as usize);
         let next = cmsg as usize + msg + _CMSG_ALIGN(size_of::<cmsghdr>());
         if next > (*mhdr).msg_control as usize + (*mhdr).msg_controllen as usize {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         } else {
             (cmsg as usize + msg) as *mut cmsghdr
         }
@@ -3145,7 +3145,7 @@ pub unsafe fn atexit(cb: extern "C" fn()) -> c_int {
         static __dso_handle: *mut c_void;
         pub fn __cxa_atexit(cb: extern "C" fn(), __arg: *mut c_void, __dso: *mut c_void) -> c_int;
     }
-    __cxa_atexit(cb, 0 as *mut c_void, __dso_handle)
+    __cxa_atexit(cb, ptr::null_mut(), __dso_handle)
 }
 
 impl siginfo_t {
diff --git a/src/unix/solarish/mod.rs b/src/unix/solarish/mod.rs
index ffcc87cba0727..896b1c849294f 100644
--- a/src/unix/solarish/mod.rs
+++ b/src/unix/solarish/mod.rs
@@ -2220,7 +2220,7 @@ f! {
 
     pub fn CMSG_FIRSTHDR(mhdr: *const crate::msghdr) -> *mut cmsghdr {
         if ((*mhdr).msg_controllen as usize) < size_of::<cmsghdr>() {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         } else {
             (*mhdr).msg_control as *mut cmsghdr
         }
@@ -2234,7 +2234,7 @@ f! {
             _CMSG_HDR_ALIGN(cmsg as usize + (*cmsg).cmsg_len as usize + size_of::<cmsghdr>());
         let max = (*mhdr).msg_control as usize + (*mhdr).msg_controllen as usize;
         if next > max {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         } else {
             _CMSG_HDR_ALIGN(cmsg as usize + (*cmsg).cmsg_len as usize) as *mut cmsghdr
         }
diff --git a/src/vxworks/mod.rs b/src/vxworks/mod.rs
index 00428543d7aff..769d9f71d0f16 100644
--- a/src/vxworks/mod.rs
+++ b/src/vxworks/mod.rs
@@ -1,7 +1,5 @@
 //! Interface to VxWorks C library
 
-use core::ptr::null_mut;
-
 use crate::prelude::*;
 
 extern_ty! {
@@ -1333,7 +1331,7 @@ const PTHREAD_MUTEXATTR_INITIALIZER: pthread_mutexattr_t = pthread_mutexattr_t {
     mutexAttrPshared: 1,
 };
 pub const PTHREAD_MUTEX_INITIALIZER: pthread_mutex_t = pthread_mutex_t {
-    mutexSemId: null_mut(),
+    mutexSemId: ptr::null_mut(),
     mutexValid: PTHREAD_VALID_OBJ,
     mutexInitted: PTHREAD_UNUSED_YET_OBJ,
     mutexCondRefCount: 0,
@@ -1348,11 +1346,11 @@ const PTHREAD_CONDATTR_INITIALIZER: pthread_condattr_t = pthread_condattr_t {
     condAttrClockId: CLOCK_REALTIME,
 };
 pub const PTHREAD_COND_INITIALIZER: pthread_cond_t = pthread_cond_t {
-    condSemId: null_mut(),
+    condSemId: ptr::null_mut(),
     condValid: PTHREAD_VALID_OBJ,
     condInitted: PTHREAD_UNUSED_YET_OBJ,
     condRefCount: 0,
-    condMutex: null_mut(),
+    condMutex: ptr::null_mut(),
     condAttr: PTHREAD_CONDATTR_INITIALIZER,
     condSemName: [0; _PTHREAD_SHARED_SEM_NAME_MAX],
 };
@@ -1364,7 +1362,7 @@ const PTHREAD_RWLOCKATTR_INITIALIZER: pthread_rwlockattr_t = pthread_rwlockattr_
     rwlockAttrConformOpt: 1,
 };
 pub const PTHREAD_RWLOCK_INITIALIZER: pthread_rwlock_t = pthread_rwlock_t {
-    rwlockSemId: null_mut(),
+    rwlockSemId: ptr::null_mut(),
     rwlockReadersRefCount: 0,
     rwlockValid: PTHREAD_VALID_OBJ,
     rwlockInitted: PTHREAD_UNUSED_YET_OBJ,
@@ -1452,7 +1450,7 @@ f! {
         if next <= max {
             (cmsg as usize + CMSG_ALIGN((*cmsg).cmsg_len as usize)) as *mut cmsghdr
         } else {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         }
     }
 
@@ -1460,7 +1458,7 @@ f! {
         if (*mhdr).msg_controllen as usize > 0 {
             (*mhdr).msg_control as *mut cmsghdr
         } else {
-            core::ptr::null_mut::<cmsghdr>()
+            ptr::null_mut()
         }
     }