diff --git a/lib/pages/common/slide/common_slide_page.dart b/lib/pages/common/slide/common_slide_page.dart
index 66c54b03b..c666fcccc 100644
--- a/lib/pages/common/slide/common_slide_page.dart
+++ b/lib/pages/common/slide/common_slide_page.dart
@@ -91,6 +91,7 @@ mixin CommonSlideMixin<T extends CommonSlidePage> on State<T>, TickerProvider {
   Widget buildList(ThemeData theme) => throw UnimplementedError();
 
   void _onDragEnd([_]) {
+    if (_downDx == null) return;
     final dx = _downDx!;
     if (_animController.value * _maxWidth + (_isRTL ? (_maxWidth - dx) : dx) >=
         100) {