Index: tracext/hg/backend.py
===================================================================
--- tracext/hg/backend.py	(revision 11)
+++ tracext/hg/backend.py	(revision 14)
@@ -1048,5 +1048,5 @@
             pats.append('path:' + self.str_path)
         opts = {'rev': ['%s:0' % self.changectx.hex()]}
-        if self.isfile:
+        if self.isfile and self.repos.version_info < (2, 1, 1):
             opts['follow'] = True
         if arity(cmdutil.walkchangerevs) == 4: