diff --git a/scripts/fpm/notarize.py b/scripts/fpm/notarize.py
index 3b3f2c54a..4ab73fe4a 100644
--- a/scripts/fpm/notarize.py
+++ b/scripts/fpm/notarize.py
@@ -5,7 +5,7 @@ import pathlib
 import sys
 from subprocess import STDOUT, check_call
 
-if sys.platform != "Darwin":
+if sys.platform != "darwin":
     raise NotImplementedError
 
 parser = argparse.ArgumentParser()