diff --git a/git-filter-repo b/git-filter-repo
index 7a77b59..cd799f2 100755
--- a/git-filter-repo
+++ b/git-filter-repo
@@ -335,7 +335,7 @@ class _IDs(object):
     """
     rv = "Current count: %d\nTranslation:\n" % self._next_id
     for k in sorted(self._translation):
-      rv += "  %d -> %d\n" % (k, self._translation[k])
+      rv += "  %d -> %s\n" % (k, self._translation[k])
 
     rv += "Reverse translation:\n"
     for k in sorted(self._reverse_translation):