diff --git a/DownKyi/ViewModels/ViewVideoDetailViewModel.cs b/DownKyi/ViewModels/ViewVideoDetailViewModel.cs
index ff93d80..6244a19 100644
--- a/DownKyi/ViewModels/ViewVideoDetailViewModel.cs
+++ b/DownKyi/ViewModels/ViewVideoDetailViewModel.cs
@@ -356,9 +356,9 @@ public class ViewVideoDetailViewModel : ViewModelBase
         {
             return;
         }
-        var avids = new HashSet<long>(parameter.Cast<VideoPage>().Select(x => x.Avid));
+        var avids = new HashSet<long>(parameter.Cast<VideoPage>().Select(x => x.Cid));
         section.VideoPages.ToList().ForEach(videoPage =>
-               videoPage.IsSelected = avids.Contains(videoPage.Avid)
+               videoPage.IsSelected = avids.Contains(videoPage.Cid)
         );
         IsSelectAll = section.VideoPages.Count == videoPages.Count && section.VideoPages.Count != 0;
     }