diff --git a/rhodecode/lib/vcs/utils/hgcompat.py b/rhodecode/lib/vcs/utils/hgcompat.py
--- a/rhodecode/lib/vcs/utils/hgcompat.py
+++ b/rhodecode/lib/vcs/utils/hgcompat.py
@@ -12,3 +12,4 @@ from mercurial.match import match
 from mercurial.mdiff import diffopts
 from mercurial.node import hex
 from mercurial.encoding import tolocal
+from mercurial import discovery
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