diff --git a/idea/src/org/jetbrains/jet/plugin/quickfix/CreateMethodFromUsageFix.java b/idea/src/org/jetbrains/jet/plugin/quickfix/CreateMethodFromUsageFix.java
index a5933c5c3c2..724634fc054 100644
--- a/idea/src/org/jetbrains/jet/plugin/quickfix/CreateMethodFromUsageFix.java
+++ b/idea/src/org/jetbrains/jet/plugin/quickfix/CreateMethodFromUsageFix.java
@@ -549,6 +549,7 @@ public class CreateMethodFromUsageFix extends CreateFromUsageFixBase {
 
         JetTypeReference returnTypeRef = func.getReturnTypeRef();
         if (returnTypeRef != null) {
+            assert returnTypeExpression != null;
             JetType[] returnTypeOptions = returnTypeExpression.getOptions();
             String[] returnTypeOptionStrings = returnTypeExpression.getOptionStrings();
             assert returnTypeOptions.length == returnTypeOptionStrings.length;