diff --git a/src/ObservableCollections/IObservableCollection.cs b/src/ObservableCollections/IObservableCollection.cs
index 9134cbf..2c8691b 100644
--- a/src/ObservableCollections/IObservableCollection.cs
+++ b/src/ObservableCollections/IObservableCollection.cs
@@ -176,22 +176,22 @@ namespace ObservableCollections
             return new NonFilteredSynchronizedViewList<T, TView>(collection.CreateView(transform), isSupportRangeFeature: true, null, null);
         }
 
-        public static INotifyCollectionChangedSynchronizedViewList<T> ToNotifyCollectionChanged<T>(this IObservableCollection<T> collection)
+        public static NotifyCollectionChangedSynchronizedViewList<T> ToNotifyCollectionChanged<T>(this IObservableCollection<T> collection)
         {
             return ToNotifyCollectionChanged(collection, null);
         }
 
-        public static INotifyCollectionChangedSynchronizedViewList<T> ToNotifyCollectionChanged<T>(this IObservableCollection<T> collection, ICollectionEventDispatcher? collectionEventDispatcher)
+        public static NotifyCollectionChangedSynchronizedViewList<T> ToNotifyCollectionChanged<T>(this IObservableCollection<T> collection, ICollectionEventDispatcher? collectionEventDispatcher)
         {
             return ToNotifyCollectionChanged(collection, static x => x, collectionEventDispatcher);
         }
 
-        public static INotifyCollectionChangedSynchronizedViewList<TView> ToNotifyCollectionChanged<T, TView>(this IObservableCollection<T> collection, Func<T, TView> transform)
+        public static NotifyCollectionChangedSynchronizedViewList<TView> ToNotifyCollectionChanged<T, TView>(this IObservableCollection<T> collection, Func<T, TView> transform)
         {
             return ToNotifyCollectionChanged(collection, transform, null!);
         }
 
-        public static INotifyCollectionChangedSynchronizedViewList<TView> ToNotifyCollectionChanged<T, TView>(this IObservableCollection<T> collection, Func<T, TView> transform, ICollectionEventDispatcher? collectionEventDispatcher)
+        public static NotifyCollectionChangedSynchronizedViewList<TView> ToNotifyCollectionChanged<T, TView>(this IObservableCollection<T> collection, Func<T, TView> transform, ICollectionEventDispatcher? collectionEventDispatcher)
         {
             // Optimized for non filtered
             return new NonFilteredSynchronizedViewList<T, TView>(collection.CreateView(transform), isSupportRangeFeature: false, collectionEventDispatcher, null);
diff --git a/src/ObservableCollections/ObservableList.Views.cs b/src/ObservableCollections/ObservableList.Views.cs
index f4e35f2..7581db2 100644
--- a/src/ObservableCollections/ObservableList.Views.cs
+++ b/src/ObservableCollections/ObservableList.Views.cs
@@ -19,12 +19,12 @@ namespace ObservableCollections
             return new View<TView>(this, transform);
         }
 
-        public INotifyCollectionChangedSynchronizedViewList<T> ToWritableNotifyCollectionChanged()
+        public NotifyCollectionChangedSynchronizedViewList<T> ToWritableNotifyCollectionChanged()
         {
             return ToWritableNotifyCollectionChanged(null);
         }
 
-        public INotifyCollectionChangedSynchronizedViewList<T> ToWritableNotifyCollectionChanged(ICollectionEventDispatcher? collectionEventDispatcher)
+        public NotifyCollectionChangedSynchronizedViewList<T> ToWritableNotifyCollectionChanged(ICollectionEventDispatcher? collectionEventDispatcher)
         {
             return ToWritableNotifyCollectionChanged(
                 static x => x,
@@ -36,12 +36,12 @@ namespace ObservableCollections
                 collectionEventDispatcher);
         }
 
-        public INotifyCollectionChangedSynchronizedViewList<TView> ToWritableNotifyCollectionChanged<TView>(Func<T, TView> transform, WritableViewChangedEventHandler<T, TView>? converter)
+        public NotifyCollectionChangedSynchronizedViewList<TView> ToWritableNotifyCollectionChanged<TView>(Func<T, TView> transform, WritableViewChangedEventHandler<T, TView>? converter)
         {
             return ToWritableNotifyCollectionChanged(transform, converter, null!);
         }
 
-        public INotifyCollectionChangedSynchronizedViewList<TView> ToWritableNotifyCollectionChanged<TView>(Func<T, TView> transform, WritableViewChangedEventHandler<T, TView>? converter, ICollectionEventDispatcher? collectionEventDispatcher)
+        public NotifyCollectionChangedSynchronizedViewList<TView> ToWritableNotifyCollectionChanged<TView>(Func<T, TView> transform, WritableViewChangedEventHandler<T, TView>? converter, ICollectionEventDispatcher? collectionEventDispatcher)
         {
             return new NonFilteredSynchronizedViewList<T, TView>(CreateView(transform), isSupportRangeFeature: false, collectionEventDispatcher, converter);
         }