diff --git a/src/main/scala/sbtsparkpackage/SparkPackagePlugin.scala b/src/main/scala/sbtsparkpackage/SparkPackagePlugin.scala
index 4a67804..b5ab842 100644
--- a/src/main/scala/sbtsparkpackage/SparkPackagePlugin.scala
+++ b/src/main/scala/sbtsparkpackage/SparkPackagePlugin.scala
@@ -75,7 +75,7 @@ object SparkPackagePlugin extends AutoPlugin {
 
   override def requires = plugins.JvmPlugin && AssemblyPlugin
 
-  override def trigger = allRequirements
+  override def trigger = noTrigger
 
   def listFilesRecursively(dir: File): Seq[File] = {
     val list = IO.listFiles(dir)
diff --git a/src/sbt-test/sbt-spark-packages/R-packaging/build.sbt b/src/sbt-test/sbt-spark-packages/R-packaging/build.sbt
index 73eeaec..b81b43c 100644
--- a/src/sbt-test/sbt-spark-packages/R-packaging/build.sbt
+++ b/src/sbt-test/sbt-spark-packages/R-packaging/build.sbt
@@ -1,3 +1,5 @@
+enablePlugins(SparkPackagePlugin)
+
 version := "0.1"
 
 scalaVersion := "2.10.4"
diff --git a/src/sbt-test/sbt-spark-packages/python-packaging/build.sbt b/src/sbt-test/sbt-spark-packages/python-packaging/build.sbt
index 72d4b12..d1c1e86 100644
--- a/src/sbt-test/sbt-spark-packages/python-packaging/build.sbt
+++ b/src/sbt-test/sbt-spark-packages/python-packaging/build.sbt
@@ -1,3 +1,5 @@
+enablePlugins(SparkPackagePlugin)
+
 version := "0.1"
 
 scalaVersion := "2.10.4"
diff --git a/src/sbt-test/sbt-spark-packages/shading/build.sbt b/src/sbt-test/sbt-spark-packages/shading/build.sbt
index 2d427b7..329deb9 100644
--- a/src/sbt-test/sbt-spark-packages/shading/build.sbt
+++ b/src/sbt-test/sbt-spark-packages/shading/build.sbt
@@ -1,3 +1,4 @@
+enablePlugins(SparkPackagePlugin)
 
 import Shading._
 
diff --git a/src/sbt-test/sbt-spark-packages/simple/build.sbt b/src/sbt-test/sbt-spark-packages/simple/build.sbt
index a825f4a..0b3defa 100644
--- a/src/sbt-test/sbt-spark-packages/simple/build.sbt
+++ b/src/sbt-test/sbt-spark-packages/simple/build.sbt
@@ -1,7 +1,9 @@
+enablePlugins(SparkPackagePlugin)
+
 version := "0.1"
 
 scalaVersion := "2.10.4"
 
 name := "hello"
 
-sparkVersion := "1.2.0"
\ No newline at end of file
+sparkVersion := "1.2.0"
diff --git a/src/sbt-test/sbt-spark-packages/wrongSparkDep/build.sbt b/src/sbt-test/sbt-spark-packages/wrongSparkDep/build.sbt
index 75ad92a..0be8c3e 100644
--- a/src/sbt-test/sbt-spark-packages/wrongSparkDep/build.sbt
+++ b/src/sbt-test/sbt-spark-packages/wrongSparkDep/build.sbt
@@ -1,3 +1,5 @@
+enablePlugins(SparkPackagePlugin)
+
 version := "0.1"
 
 scalaVersion := "2.10.4"