diff --git a/mercurial/formatter.py b/mercurial/formatter.py
--- a/mercurial/formatter.py
+++ b/mercurial/formatter.py
@@ -624,8 +624,7 @@
     a map file"""
     assert not (spec.tmpl and spec.mapfile)
     if spec.mapfile:
-        frommapfile = templater.templater.frommapfile
-        return frommapfile(
+        return templater.templater.frommapfile(
             spec.mapfile, defaults=defaults, resources=resources, cache=cache
         )
     return maketemplater(