diff --git a/app.py b/app.py
index 8614794..8d6d664 100644
--- a/app.py
+++ b/app.py
@@ -90,7 +90,7 @@ if __name__ == '__main__':
     parser.add_argument('--ip', type=str, default='0.0.0.0')
     parser.add_argument('--port', type=int, default=8000)
     parser.add_argument('--pin', type=int, default=random.randint(1000, 9999),
-                        help='The authorisation pin, defaults to a random number'+
+                        help='The authorisation pin, defaults to a random number '+
                              'between 1000 and 9999')
     args = parser.parse_args()