diff --git a/platform/lang-impl/src/com/intellij/codeInsight/daemon/impl/DefaultHighlightInfoProcessor.java b/platform/lang-impl/src/com/intellij/codeInsight/daemon/impl/DefaultHighlightInfoProcessor.java
index 1484f511fac7..854c496913ec 100644
--- a/platform/lang-impl/src/com/intellij/codeInsight/daemon/impl/DefaultHighlightInfoProcessor.java
+++ b/platform/lang-impl/src/com/intellij/codeInsight/daemon/impl/DefaultHighlightInfoProcessor.java
@@ -64,8 +64,10 @@ public class DefaultHighlightInfoProcessor extends HighlightInfoProcessor {
   }
 
   static void repaintErrorStripeAndIcon(@NotNull Editor editor, @NotNull Project project) {
-    EditorMarkupModelImpl markup = (EditorMarkupModelImpl)editor.getMarkupModel();
-    markup.repaintTrafficLightIcon();
+    MarkupModel markup = editor.getMarkupModel();
+    if (markup instanceof EditorMarkupModelImpl) {
+      ((EditorMarkupModelImpl)markup).repaintTrafficLightIcon();
+    }
     ErrorStripeUpdateManager.getInstance(project).repaintErrorStripePanel(editor);
   }