diff --git a/platform/platform-impl/src/com/intellij/openapi/wm/impl/status/InsertOverwritePanel.java b/platform/platform-impl/src/com/intellij/openapi/wm/impl/status/InsertOverwritePanel.java
index 44257ee463c0..9518a7dfe584 100644
--- a/platform/platform-impl/src/com/intellij/openapi/wm/impl/status/InsertOverwritePanel.java
+++ b/platform/platform-impl/src/com/intellij/openapi/wm/impl/status/InsertOverwritePanel.java
@@ -102,6 +102,7 @@ public class InsertOverwritePanel extends EditorBasedWidget implements StatusBar
   private void switchEditor() {
     if (myOldEditor != null) {
       myOldEditor.removePropertyChangeListener(this);
+      myOldEditor = null;
     }
     EditorEx editor = (EditorEx)getEditor();
     if (editor != null) {