diff --git a/src/servers/app/drawing/DisplayDriverImpl.cpp b/src/servers/app/drawing/DisplayDriverImpl.cpp
index 23d334b6d1..dc86edd410 100644
--- a/src/servers/app/drawing/DisplayDriverImpl.cpp
+++ b/src/servers/app/drawing/DisplayDriverImpl.cpp
@@ -1646,7 +1646,7 @@ void DisplayDriverImpl::StrokeLine(const BPoint &start, const BPoint &end, const
 	\param end Ending point
 	\param d The relevant drawing data for this line
 */
-void DisplayDriverImpl::StrokeLine(const BPoint &start, const BPoint &end, const DrawData *d)
+void DisplayDriverImpl::StrokeLine(const BPoint &start, const BPoint &end, DrawData *d)
 {
 	Lock();
 	
@@ -1759,7 +1759,7 @@ void DisplayDriverImpl::StrokePoint(const BPoint& pt, const RGBColor &color)
 	Invalidate(BRect(pt,pt));
 }
 
-void DisplayDriverImpl::StrokePoint(const BPoint& pt, const DrawData *d)
+void DisplayDriverImpl::StrokePoint(const BPoint& pt, DrawData *d)
 {
 	StrokeLine(pt, pt, d);
 	Invalidate(BRect(pt,pt));
diff --git a/src/servers/app/drawing/DisplayDriverPainter.h b/src/servers/app/drawing/DisplayDriverPainter.h
index 40596733d9..5ff5817184 100644
--- a/src/servers/app/drawing/DisplayDriverPainter.h
+++ b/src/servers/app/drawing/DisplayDriverPainter.h
@@ -125,14 +125,14 @@ class DisplayDriverPainter : public DisplayDriver {
 
 	virtual	void				StrokeLine(		const BPoint &start,
 												const BPoint &end,
-												const DrawData *d);
+												DrawData *d);
 
 	// this version used by Decorator
 	virtual	void				StrokePoint(	const BPoint &pt,
 												const RGBColor &color);
 
 	virtual	void				StrokePoint(	const BPoint &pt,
-												const DrawData *d);
+												DrawData *d);
 
 	virtual	void				StrokePolygon(	BPoint *ptlist,
 												int32 numpts,