diff --git a/designer-base/src/main/java/com/fr/design/gui/imenu/UIBasicMenuItemUI.java b/designer-base/src/main/java/com/fr/design/gui/imenu/UIBasicMenuItemUI.java
index 1c07c8260d..844120c51b 100644
--- a/designer-base/src/main/java/com/fr/design/gui/imenu/UIBasicMenuItemUI.java
+++ b/designer-base/src/main/java/com/fr/design/gui/imenu/UIBasicMenuItemUI.java
@@ -7,6 +7,7 @@ package com.fr.design.gui.imenu;
 import com.fr.design.utils.ColorRoutines;
 import com.fr.design.utils.ThemeUtils;
 import com.fr.general.ComparatorUtils;
+import com.fr.stable.StringUtils;
 
 import javax.swing.AbstractAction;
 import javax.swing.ActionMap;
@@ -579,7 +580,8 @@ public class UIBasicMenuItemUI extends MenuItemUI {
      */
     private boolean isInternalFrameSystemMenu() {
         String actionCommand = menuItem.getActionCommand();
-        return (actionCommand.equals("Close")) || (actionCommand.equals("Minimize")) || (actionCommand.equals("Restore")) || (actionCommand.equals("Maximize"));
+        return (StringUtils.equals(actionCommand,"Close") || StringUtils.equals(actionCommand,"Minimize")
+                || StringUtils.equals(actionCommand,"Restore") || StringUtils.equals(actionCommand,"Maximize"));
     }
 
     //////////////////////////////////////////////////////////