diff --git a/git-remote-hg b/git-remote-hg
index c273c95..51b44ab 100755
--- a/git-remote-hg
+++ b/git-remote-hg
@@ -720,9 +720,7 @@ def do_list(parser):
             print "? refs/heads/branches/%s" % gitref(branch)
 
     for bmark in bmarks:
-        if bmarks[bmark].hex() == '0' * 40:
-            warn("Ignoring invalid bookmark '%s'", bmark)
-        else:
+        if bmarks[bmark].hex() != '0' * 40:
             print "? refs/heads/%s" % gitref(bmark)
 
     for tag, node in repo.tagslist():