diff --git a/radicale_sql/__init__.py b/radicale_sql/__init__.py
index 361a4cb..e15783d 100644
--- a/radicale_sql/__init__.py
+++ b/radicale_sql/__init__.py
@@ -599,6 +599,7 @@ class Storage(BaseStorage):
 
     @radicale.types.contextmanager
     def acquire_lock(self, mod: str, user: str = "") -> Iterator[None]:
+        _ = mod, user
         yield
 
     def _verify(self, *, connection) -> bool: