diff --git a/classquiz/oauth/init_oauth.py b/classquiz/oauth/init_oauth.py
index 91c6bcf..24f9539 100644
--- a/classquiz/oauth/init_oauth.py
+++ b/classquiz/oauth/init_oauth.py
@@ -29,7 +29,7 @@ class RedisCache:
         await redis.set(f"authlib:{key}", data, ex=expires)
 
     async def delete(self, key: str) -> None:
-        await redis.delete(key)
+        await redis.delete(f"authlib:{key}")
 
 
 @lru_cache()