diff --git a/utility/FrequencyTimer2.cpp b/utility/FrequencyTimer2.cpp
index bb29cc9c0..4b3c36976 100644
--- a/utility/FrequencyTimer2.cpp
+++ b/utility/FrequencyTimer2.cpp
@@ -33,7 +33,7 @@
 // Added by TB2014 for Mozzi library, to hide code from Teensy 3.1
 #if defined (__AVR__)
 
-#include <FrequencyTimer2.h>
+#include "FrequencyTimer2.h"
 
 #include <avr/interrupt.h>
 #include "Arduino.h"