diff --git a/box.go b/box.go
index 4150c906..89fe1237 100644
--- a/box.go
+++ b/box.go
@@ -60,6 +60,7 @@ func New(ctx context.Context, options option.Options) (*Box, error) {
 			if err != nil {
 				return nil, err
 			}
+			logWriter = logFile
 		}
 		logFormatter := log.Formatter{
 			BaseTime:         createdAt,