--- a/tests/revlog-formatv0.py	Sat Apr 16 05:32:10 2016 +0300
+++ b/tests/revlog-formatv0.py	Sat Apr 16 05:33:23 2016 +0300
@@ -17,7 +17,9 @@
 empty file
 """
 
-import os, sys
+from __future__ import absolute_import
+import os
+import sys
 
 files = [
     ('formatv0/.hg/00changelog.i',