diff --git a/src/SMESH_SWIG/smesh.py b/src/SMESH_SWIG/smesh.py
index db9602b40..7d46dd9d7 100644
--- a/src/SMESH_SWIG/smesh.py
+++ b/src/SMESH_SWIG/smesh.py
@@ -1321,7 +1321,7 @@ class Mesh:
         if salome.sg.hasDesktop():
             smeshgui = salome.ImportComponentGUI("SMESH")
             smeshgui.Init(salome.myStudyId)
-            smeshgui.SetMeshIcon( salome.ObjectToID( self.mesh ), ok, (NbNodes()==0) )
+            smeshgui.SetMeshIcon( salome.ObjectToID( self.mesh ), ok, (self.NbNodes()==0) )
             salome.sg.updateObjBrowser(1)
             pass
         return ok