--- a/hgext/convert/common.py	Tue Oct 08 15:15:37 2019 -0700
+++ b/hgext/convert/common.py	Tue Oct 08 15:06:18 2019 -0700
@@ -169,7 +169,7 @@
         """
         if not re.match(br'[0-9a-fA-F]{40,40}$', revstr):
             raise error.Abort(
-                _(b'%s entry %s is not a valid revision' b' identifier')
+                _(b'%s entry %s is not a valid revision identifier')
                 % (mapname, revstr)
             )