diff -r 01280638bdb1 -r 33ed8b511185 hgext/extdiff.py
--- a/hgext/extdiff.py	Thu Apr 02 23:22:02 2015 +0900
+++ b/hgext/extdiff.py	Thu Apr 02 23:32:28 2015 +0900
@@ -256,8 +256,8 @@
             cmdutil.export(repo, [repo[node1a].rev(), repo[node2].rev()],
                            fntemplate=repo.vfs.reljoin(tmproot, template),
                            match=matcher)
-            label1a = cmdutil.makefilename(repo, template, node1a)
-            label2 = cmdutil.makefilename(repo, template, node2)
+            label1a = cmdutil.makefilename(repo[node1a], template)
+            label2 = cmdutil.makefilename(repo[node2], template)
             dir1a = repo.vfs.reljoin(tmproot, label1a)
             dir2 = repo.vfs.reljoin(tmproot, label2)
             dir1b = None