--- a/hgext/convert/convcmd.py	Mon Sep 30 18:27:42 2013 -0700
+++ b/hgext/convert/convcmd.py	Fri Jul 19 14:20:11 2013 +0200
@@ -516,10 +516,7 @@
         destc.setfilemapmode(True)
 
     if not revmapfile:
-        try:
-            revmapfile = destc.revmapfile()
-        except Exception:
-            revmapfile = os.path.join(destc, "map")
+        revmapfile = destc.revmapfile()
 
     c = converter(ui, srcc, destc, revmapfile, opts)
     c.convert(sortmode)