diff --git a/plugins/xslt-debugger/engine/impl/xslt-debugger-engine-impl.iml b/plugins/xslt-debugger/engine/impl/xslt-debugger-engine-impl.iml
index 1d76bec9ea9b..a87eb48f869a 100644
--- a/plugins/xslt-debugger/engine/impl/xslt-debugger-engine-impl.iml
+++ b/plugins/xslt-debugger/engine/impl/xslt-debugger-engine-impl.iml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <module type="JAVA_MODULE" version="4">
-  <component name="NewModuleRootManager" inherit-compiler-output="true">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_5" inherit-compiler-output="true">
     <exclude-output />
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />