diff --git a/tests/test-check-py3-compat.t b/tests/test-check-py3-compat.t
--- a/tests/test-check-py3-compat.t
+++ b/tests/test-check-py3-compat.t
@@ -62,7 +62,6 @@
   tests/test-manifest.py not using absolute_import
   tests/test-pathencode.py not using absolute_import
   tests/test-pathencode.py requires print_function
-  tests/test-revlog-ancestry.py not using absolute_import
   tests/test-revlog-ancestry.py requires print_function
   tests/test-run-tests.py not using absolute_import
   tests/test-simplemerge.py not using absolute_import
diff --git a/tests/test-revlog-ancestry.py b/tests/test-revlog-ancestry.py
--- a/tests/test-revlog-ancestry.py
+++ b/tests/test-revlog-ancestry.py
@@ -1,5 +1,10 @@
+from __future__ import absolute_import
 import os
-from mercurial import hg, ui, merge
+from mercurial import (
+    hg,
+    merge,
+    ui,
+)
 
 u = ui.ui()