diff --git a/gamutrf/offline.py b/gamutrf/offline.py
index cf847312..f8f643c8 100644
--- a/gamutrf/offline.py
+++ b/gamutrf/offline.py
@@ -15,7 +15,6 @@ def main():
     parser = argument_parser()
     parser.add_argument("filename", type=str, help="Recording filename (or glob)")
     options = parser.parse_args()
-    filename = options.filename
     for filename in glob.glob(options.filename):
         out_dir = os.path.dirname(filename)
         if out_dir == "":