diff --git a/modules/gui/pymod/init_context_menu.py b/modules/gui/pymod/init_context_menu.py
index bddcda7fd2533e347ae910e7c5f361f680043cc4..750c123bc1337df940b79e98cd43a41f8c22987f 100644
--- a/modules/gui/pymod/init_context_menu.py
+++ b/modules/gui/pymod/init_context_menu.py
@@ -218,7 +218,7 @@ class SurfaceContextMenu(QtCore.QObject):
     for entity in ent_list:
       if isinstance(entity, gfx.Entity):
         try:
-          s=msms.CalculateSurface(entity.view.handle,
+          s=msms.CalculateSurface(entity.view,
                                   msms_exe=msms_exe,
                                   density=density,
                                   radius=radius,