diff --git a/drive/app/benchmark/_lib.py b/drive/app/benchmark/_lib.py
index 3037b7d7..02c2556f 100644
--- a/drive/app/benchmark/_lib.py
+++ b/drive/app/benchmark/_lib.py
@@ -24,7 +24,7 @@ def random_date() -> datetime:
 
 
 def random_str() -> str:
-    return ''.join(random.choices(_STR_LIST, k=64))
+    return "".join(random.choices(_STR_LIST, k=64))
 
 
 def random_private() -> dict[str, str]:
diff --git a/drive/app/lib.py b/drive/app/lib.py
index ba0c0b4a..8092c620 100644
--- a/drive/app/lib.py
+++ b/drive/app/lib.py
@@ -12,9 +12,7 @@ def get_daily_usage(drive: Drive) -> int:
     now = datetime.now(UTC)
     yesterday = now - timedelta(days=1)
     dsn = _get_dsn(drive)
-    return get_uploaded_size(
-        dsn, int(yesterday.timestamp()), int(now.timestamp())
-    )
+    return get_uploaded_size(dsn, yesterday, now)
 
 
 def _get_dsn(drive: Drive) -> str: