diff --git a/etg/propgridiface.py b/etg/propgridiface.py
index ae948e71..ce169cd3 100644
--- a/etg/propgridiface.py
+++ b/etg/propgridiface.py
@@ -99,7 +99,7 @@ def run():
             return sipGetState(sipTransferObj);
         }
         else if (sipPy == Py_None) {
-            *sipCppPtr = new wxPGPropArgCls(reinterpret_cast< wxPGProperty * >(NULL));
+            *sipCppPtr = new wxPGPropArgCls(static_cast< wxPGProperty * >(NULL));
             return sipGetState(sipTransferObj);
         }
         else {