diff --git a/src/server/app.py b/src/server/app.py
index 94bfee0..ad2cc98 100644
--- a/src/server/app.py
+++ b/src/server/app.py
@@ -73,9 +73,10 @@ _google_client_id_cache_ts = 0.0
 def _get_google_client_id() -> str:
     global _google_client_id_cache, _google_client_id_cache_ts
     now = time.monotonic()
-    if _google_client_id_cache is not None and (
-        now - _google_client_id_cache_ts
-    ) <= _GOOGLE_CLIENT_ID_CACHE_TTL_SECONDS:
+    if (
+        _google_client_id_cache is not None
+        and (now - _google_client_id_cache_ts) <= _GOOGLE_CLIENT_ID_CACHE_TTL_SECONDS
+    ):
         return _google_client_id_cache
 
     config = load_config()