diff --git a/modules/gui/pymod/scene/render_options_widget.py b/modules/gui/pymod/scene/render_options_widget.py
index 989f1c91782ab6fc09e609e79d5c5582498c5a71..f1d9929ee605b5b507d2b9689d232f1dfcaee67c 100644
--- a/modules/gui/pymod/scene/render_options_widget.py
+++ b/modules/gui/pymod/scene/render_options_widget.py
@@ -78,7 +78,7 @@ class RenderOptionsWidget(ComboOptionsWidget):
     self._in_view_method = False
     self.setMinimumSize(250,200)
   def OnActivate(self, item):
-    pass
+    self.DoResize()
   def OnComboChange(self, item):
     scene_selection = gui.SceneSelection.Instance()
     for i in range(0,scene_selection.GetActiveNodeCount()):