diff --git a/src/SMESH/SMESH_Mesh.cxx b/src/SMESH/SMESH_Mesh.cxx
index d3fe63eb6..6690f0377 100644
--- a/src/SMESH/SMESH_Mesh.cxx
+++ b/src/SMESH/SMESH_Mesh.cxx
@@ -240,6 +240,9 @@ SMESH_Mesh::~SMESH_Mesh()
     pthread_t thread;
     int result=pthread_create(&thread, NULL, deleteMeshDS, (void*)_meshDS);
 #endif
+
+  fs::remove_all(tmp_folder);
+
   }
 }
 
diff --git a/src/SMESH_SWIG/smeshBuilder.py b/src/SMESH_SWIG/smeshBuilder.py
index 74b1f6735..1b4ddd4f3 100644
--- a/src/SMESH_SWIG/smeshBuilder.py
+++ b/src/SMESH_SWIG/smeshBuilder.py
@@ -1621,7 +1621,7 @@ class Mesh(metaclass = MeshMeta):
         Destructor. Clean-up resources
         """
         if self.mesh:
-            #self.mesh.UnRegister()
+            self.mesh.UnRegister()
             pass
         pass