diff --git a/mercurial/obsolete.py b/mercurial/obsolete.py
--- a/mercurial/obsolete.py
+++ b/mercurial/obsolete.py
@@ -52,7 +52,7 @@ The header is followed by the markers. E
   cannot contain '\0'.
 """
 import struct
-from mercurial import util, base85
+import util, base85
 from i18n import _
 
 # the obsolete feature is not mature enought to be enabled by default.