diff --git a/rbac/userperm.py b/rbac/userperm.py
index 24ec358..a717908 100644
--- a/rbac/userperm.py
+++ b/rbac/userperm.py
@@ -36,7 +36,7 @@ class UserPermisions:
 	async def get_cached_user_cup(self, userid):
 		return self.cups.get(userid)
 
-	async def load_user_cup(userid):
+	async def load_user_cup(self, userid):
 		sql = """select a.id,b.path from users a, userrole c, rolepermission d, permission b
 where a.id = c.userid
 	and c.roleid = d.roleid