diff --git a/demo_server.py b/demo_server.py
index 4f985eb..8fae466 100644
--- a/demo_server.py
+++ b/demo_server.py
@@ -101,4 +101,4 @@ if __name__ == '__main__':
     hparams.parse(args.hparams)
     print(hparams_debug_string())
     synthesizer.load(args.checkpoint)
-    app.run(host='0.0.0.0', port=3000)
+    app.run(host='0.0.0.0', port=args.port)