diff --git a/demo/config.py.simple b/demo/config.py.simple
index a9d9b87..7d17154 100644
--- a/demo/config.py.simple
+++ b/demo/config.py.simple
@@ -1,4 +1,4 @@
--"Store App settings"
+"Store App settings"
 
 USER_AGENT = "COSCUP-demo"
 AP_CONTENT_TYPE = "application/activity+json"
@@ -7,4 +7,4 @@ USERNAME = "foo"
 DOMAIN = "localhost"
 SCHEME = "http"
 ID = f"{SCHEME}://{DOMAIN}/user/{USERNAME}"
-BASE_URL = f"{SCHEME}://{DOMAIN}/
+BASE_URL = f"{SCHEME}://{DOMAIN}/"