diff --git a/keystoneclient/v2_0/shell.py b/keystoneclient/v2_0/shell.py
index 0c7c233ce..a8dc92804 100755
--- a/keystoneclient/v2_0/shell.py
+++ b/keystoneclient/v2_0/shell.py
@@ -36,6 +36,9 @@ def require_service_catalog(f):
             raise Exception(msg)
         return f(kc, args)
 
+    # Change __doc__ attribute back to origin function's __doc__
+    wrapped.__doc__ = f.__doc__
+
     return wrapped