diff --git a/platform/lang-api/src/com/intellij/find/FindModel.java b/platform/lang-api/src/com/intellij/find/FindModel.java
index ea140fe0ca8b..0d50acd41097 100644
--- a/platform/lang-api/src/com/intellij/find/FindModel.java
+++ b/platform/lang-api/src/com/intellij/find/FindModel.java
@@ -16,6 +16,7 @@
 package com.intellij.find;
 
 import com.intellij.openapi.diagnostic.Logger;
+import com.intellij.openapi.util.Comparing;
 import com.intellij.openapi.util.UserDataHolderBase;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.psi.search.SearchScope;
@@ -712,7 +713,7 @@ public class FindModel extends UserDataHolderBase implements Cloneable {
   }
 
   public void setCustomScope(final SearchScope customScope) {
-    boolean changed = this.customScope.equals(customScope);
+    boolean changed = Comparing.equal(this.customScope, customScope);
     this.customScope = customScope;
     if (changed) {
       notifyObservers();