diff --git a/util/git-pre-commit.py b/util/git-pre-commit.py
index 7681b878b5..ece2467141 100755
--- a/util/git-pre-commit.py
+++ b/util/git-pre-commit.py
@@ -114,6 +114,6 @@ if failing_files:
             "fixes for commit in\n"
             "the following files: ", file=sys.stderr)
         for f in staged_mismatch:
-            print("\t%s".format(f), file=sys.stderr)
+            print("\t{}".format(f), file=sys.stderr)
         print("Please `git --add' them", file=sys.stderr)
     sys.exit(1)