--- a/hgext/largefiles/overrides.py	Wed Feb 18 22:17:35 2015 +0900
+++ b/hgext/largefiles/overrides.py	Thu Feb 26 06:03:39 2015 +0900
@@ -832,6 +832,9 @@
     return result
 
 def overriderebase(orig, ui, repo, **opts):
+    if not util.safehasattr(repo, '_largefilesenabled'):
+        return orig(ui, repo, **opts)
+
     resuming = opts.get('continue')
     repo._lfcommithooks.append(lfutil.automatedcommithook(resuming))
     repo._lfstatuswriters.append(lambda *msg, **opts: None)