diff --git a/idea/src/org/jetbrains/jet/plugin/intentions/SpecifyTypeExplicitlyAction.java b/idea/src/org/jetbrains/jet/plugin/intentions/SpecifyTypeExplicitlyAction.java
index 3f3ca864871..9678f485031 100644
--- a/idea/src/org/jetbrains/jet/plugin/intentions/SpecifyTypeExplicitlyAction.java
+++ b/idea/src/org/jetbrains/jet/plugin/intentions/SpecifyTypeExplicitlyAction.java
@@ -57,9 +57,7 @@ public class SpecifyTypeExplicitlyAction extends PsiElementBaseIntentionAction {
         }
         PsiElement parent = element.getParent();
         JetType type = getTypeForDeclaration((JetNamedDeclaration) parent);
-        if (ErrorUtils.isErrorType(type)) {
-            return;
-        }
+        assert !ErrorUtils.isErrorType(type) : "Unexpected error type: " + element.getText();
         if (parent instanceof JetProperty) {
             JetProperty property = (JetProperty) parent;
             if (property.getTypeRef() == null) {