diff --git a/src/SMESH_SWIG/smeshBuilder.py b/src/SMESH_SWIG/smeshBuilder.py
index ee22a96bd..ec65b9fa9 100644
--- a/src/SMESH_SWIG/smeshBuilder.py
+++ b/src/SMESH_SWIG/smeshBuilder.py
@@ -1657,7 +1657,7 @@ class Mesh(metaclass = MeshMeta):
         Destructor. Clean-up resources
         """
         if self.mesh:
-            self.mesh.UnRegister()
+            #self.mesh.UnRegister()
             pass
         pass