diff --git a/mercurial/hg.py b/mercurial/hg.py
--- a/mercurial/hg.py
+++ b/mercurial/hg.py
@@ -1121,6 +1121,7 @@
     assert stats.unresolvedcount == 0
     if show_stats:
         _showstats(repo, stats, quietempty)
+    return False
 
 
 # naming conflict in updatetotally()