--- a/hgext/convert/filemap.py	Sun Oct 06 17:59:15 2019 -0400
+++ b/hgext/convert/filemap.py	Sun Oct 06 19:25:18 2019 -0400
@@ -126,7 +126,7 @@
         repo belong to the source repo and what parts don't."""
         if self.targetprefixes is None:
             self.targetprefixes = set()
-            for before, after in self.rename.iteritems():
+            for before, after in pycompat.iteritems(self.rename):
                 self.targetprefixes.add(after)
 
         # If "." is a target, then all target files are considered from the