diff --git a/wxPython/src/_pen.i b/wxPython/src/_pen.i
index a30cc189d2..150417ea1e 100644
--- a/wxPython/src/_pen.i
+++ b/wxPython/src/_pen.i
@@ -63,7 +63,7 @@ public:
         }
     }
     
-    bool operator==(const wxPen& pen) const;
+    bool operator==(const wxPen& pen) /*const*/;
 
 #ifndef __WXMAC__
 //  wxDash* GetDash() const;