diff --git a/contrib/filter-repo-demos/lint-history b/contrib/filter-repo-demos/lint-history
index 4ec34ed..5b45b7e 100755
--- a/contrib/filter-repo-demos/lint-history
+++ b/contrib/filter-repo-demos/lint-history
@@ -114,7 +114,7 @@ def lint_with_real_filenames(commit, metadata):
         f.write(contents_plus_newline[:-1])
 
       # Lint the file
-      subprocess.check_call(lint_args.command + [filename])
+      subprocess.check_call(lint_args.command + [filename.decode('utf-8')])
 
       # Get the new contents
       with open(filename, "rb") as f: