diff --git a/.idea/compiler.xml b/.idea/compiler.xml
index 569ac7af0c1b..8f78eff1f003 100644
--- a/.idea/compiler.xml
+++ b/.idea/compiler.xml
@@ -25,6 +25,10 @@
         <processorPath useClasspath="true" />
       </profile>
     </annotationProcessing>
+    <bytecodeTargetLevel target="1.6">
+      <module name="groovy_rt" target="1.5" />
+      <module name="javac2" target="1.5" />
+    </bytecodeTargetLevel>
   </component>
   <component name="EclipseCompilerSettings">
     <option name="GENERATE_NO_WARNINGS" value="true" />