diff --git a/weed/iam/sts/session_store.go b/weed/iam/sts/session_store.go
index 44ca06925..0d1647818 100644
--- a/weed/iam/sts/session_store.go
+++ b/weed/iam/sts/session_store.go
@@ -283,7 +283,7 @@ func (f *FilerSessionStore) CleanupExpiredSessions(ctx context.Context, filerAdd
 	if filerAddress == "" {
 		return fmt.Errorf(ErrFilerAddressRequired)
 	}
-	
+
 	now := time.Now()
 	expiredCount := 0