diff --git a/imperative/python/megengine/core/tensor/multipledispatch/__init__.py b/imperative/python/megengine/core/tensor/multipledispatch/__init__.py
index c37bfd98..84d1bdd6 100644
--- a/imperative/python/megengine/core/tensor/multipledispatch/__init__.py
+++ b/imperative/python/megengine/core/tensor/multipledispatch/__init__.py
@@ -46,7 +46,8 @@
 # Commit: 9e3c87d0cee57972fd5cc33fe5cacde77c781834
 # Authors: Matthew Rocklin et al.
 #
-# Refer to ACKNOWLEDGEMENT for copyright and liscense information
+# The original LICENSE file is included in the ACKNOWLEDGEMENT file under
+# MegEngine root directory.
 
 from .core import dispatch
 from .dispatcher import Dispatcher