diff --git a/src/Avalonia.Controls/Selection/InternalSelectionModel.cs b/src/Avalonia.Controls/Selection/InternalSelectionModel.cs
index d92ffb0d1a..d0715e402d 100644
--- a/src/Avalonia.Controls/Selection/InternalSelectionModel.cs
+++ b/src/Avalonia.Controls/Selection/InternalSelectionModel.cs
@@ -168,7 +168,7 @@ namespace Avalonia.Controls.Selection
         {
             if (_writableSelectedItems is INotifyCollectionChanged incc)
             {
-                incc.CollectionChanged += OnSelectedItemsCollectionChanged;
+                incc.CollectionChanged -= OnSelectedItemsCollectionChanged;
             }
         }