diff --git a/plugins/groovy/rt/groovy_rt.iml b/plugins/groovy/rt/groovy_rt.iml
index 70b136f55efc..39118efae115 100644
--- a/plugins/groovy/rt/groovy_rt.iml
+++ b/plugins/groovy/rt/groovy_rt.iml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <module relativePaths="true" type="JAVA_MODULE" version="4">
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_5" inherit-compiler-output="true">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_6" inherit-compiler-output="true">
     <exclude-output />
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />