diff --git a/contrib/python3-whitelist b/contrib/python3-whitelist
--- a/contrib/python3-whitelist
+++ b/contrib/python3-whitelist
@@ -16,6 +16,7 @@ test-backout.t
 test-backwards-remove.t
 test-basic.t
 test-bheads.t
+test-bisect.t
 test-bisect2.t
 test-blackbox.t
 test-bookmarks-current.t
diff --git a/tests/test-bisect.t b/tests/test-bisect.t
--- a/tests/test-bisect.t
+++ b/tests/test-bisect.t
@@ -465,8 +465,8 @@ test bisecting command
   > from __future__ import absolute_import
   > import sys
   > from mercurial import hg, ui as uimod
-  > repo = hg.repository(uimod.ui.load(), '.')
-  > if repo['.'].rev() < 6:
+  > repo = hg.repository(uimod.ui.load(), b'.')
+  > if repo[b'.'].rev() < 6:
   >     sys.exit(1)
   > EOF
   $ chmod +x script.py