diff --git a/sip/qt/qstyle.sip b/sip/qt/qstyle.sip
index 37ef003..9a15be5 100644
--- a/sip/qt/qstyle.sip
+++ b/sip/qt/qstyle.sip
@@ -233,10 +233,10 @@ public:
 	};
 
 	virtual void polish(TQWidget *);
-	virtual void polish(TQStyleControlElementData ceData, ControlElementFlags, void *);
+	virtual void polish(const TQStyleControlElementData &ceData, ControlElementFlags, void *);
 
 	virtual void unPolish(TQWidget *);
-	virtual void unPolish(TQStyleControlElementData ceData, ControlElementFlags, void *);
+	virtual void unPolish(const TQStyleControlElementData &ceData, ControlElementFlags, void *);
 
 	virtual void polish(TQApplication *);
 	virtual void applicationPolish(const TQStyleControlElementData&, ControlElementFlags, void *);