diff --git a/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v6.h b/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v6.h
index 5d28f9229d9..ac4fb490373 100644
--- a/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v6.h
+++ b/CGAL_ipelets/include/CGAL/CGAL_Ipelet_base_v6.h
@@ -275,7 +275,7 @@ public:
     //------------------------------
 
     void 
-    copy_attributes(IpeAllAttributes& AAttr,const IpeObject* obj_ipe) const 
+    copy_attributes(IpeAllAttributes& AAttr,IpeObject* obj_ipe) const 
     {
       AAttr.iStroke = obj_ipe -> Stroke();