diff --git a/tools/codeformat.py b/tools/codeformat.py
index 7f13a059f4..588e058213 100755
--- a/tools/codeformat.py
+++ b/tools/codeformat.py
@@ -192,7 +192,7 @@ def main():
             command.append("-v")
         else:
             command.append("-q")
-        command.append(".")
+        command.extend(files if files else ["."])
         subprocess.check_call(command, cwd=TOP)