diff --git a/java/java-impl/src/com/intellij/refactoring/introduceParameter/IntroduceParameterProcessor.java b/java/java-impl/src/com/intellij/refactoring/introduceParameter/IntroduceParameterProcessor.java
index bdc480656600..168e0b71d708 100644
--- a/java/java-impl/src/com/intellij/refactoring/introduceParameter/IntroduceParameterProcessor.java
+++ b/java/java-impl/src/com/intellij/refactoring/introduceParameter/IntroduceParameterProcessor.java
@@ -461,7 +461,7 @@ public class IntroduceParameterProcessor extends BaseRefactoringProcessor implem
     final Runnable runnable = new Runnable() {
       public void run() {
         if (!myMethodToReplaceIn.isValid()) return;
-        MethodDuplicatesHandler.invokeOnScope(myProject, Collections.singleton(myMethodToReplaceIn),
+        MethodDuplicatesHandler.invokeOnScope(myProject, Collections.<PsiMember>singleton(myMethodToReplaceIn),
                                               new AnalysisScope(myMethodToReplaceIn.getContainingFile()), true);
       }
     };