--- a/eric6/HexEdit/HexEditUndoStack.py	Thu Sep 17 19:10:36 2020 +0200
+++ b/eric6/HexEdit/HexEditUndoStack.py	Thu Sep 17 19:16:18 2020 +0200
@@ -7,11 +7,7 @@
 Module implementing the Undo stack for the hex edit widget.
 """
 
-
-try:
-    from enum import Enum
-except ImportError:
-    from ThirdParty.enum import Enum
+from enum import Enum
 
 from PyQt5.QtWidgets import QUndoStack, QUndoCommand