diff --git a/scripts/readme-gen/readme_gen.py b/scripts/readme-gen/readme_gen.py
index c32ce79bddf4..d309d6e97518 100644
--- a/scripts/readme-gen/readme_gen.py
+++ b/scripts/readme-gen/readme_gen.py
@@ -34,7 +34,7 @@
 
 
 def get_help(file):
-    return subprocess.check_output(['python', file, '--help'])
+    return subprocess.check_output(['python', file, '--help']).decode()
 
 
 def main():