diff --git a/lib/src/components/toast/brn_toast.dart b/lib/src/components/toast/brn_toast.dart
index 158edbca..41d4e9eb 100644
--- a/lib/src/components/toast/brn_toast.dart
+++ b/lib/src/components/toast/brn_toast.dart
@@ -77,7 +77,7 @@ class BrnToast {
     /// 自动根据内容长度决定显示时长，更加人性化
     final int autoDuration = min(text.length * 0.06 + 0.8, 5.0).ceil();
     final Duration finalDuration =
-        duration ?? Duration(milliseconds: autoDuration);
+        duration ?? Duration(seconds: autoDuration);
     final OverlayEntry overlayEntry = OverlayEntry(
       builder: (context) {
         return _ToastWidget(