diff --git a/mem_usage_ui/__main__.py b/mem_usage_ui/__main__.py
index 808189c..f303682 100644
--- a/mem_usage_ui/__main__.py
+++ b/mem_usage_ui/__main__.py
@@ -40,7 +40,7 @@ def parse_args():
     parser = ArgumentParser()
     parser.add_argument("--debug", required=False, default=False, type=bool)
     parser.add_argument("--host", required=False, default="localhost")
-    parser.add_argument("--port", required=False, default=8080)
+    parser.add_argument("--port", required=False, default=8080, type=int)
     return parser.parse_args()