2 files changed, 8 insertions, 6 deletions
diff --git a/Xamarin.Forms.Platform.Android/AppCompat/PickerRenderer.cs b/Xamarin.Forms.Platform.Android/AppCompat/PickerRenderer.cs
index 6650d9e6..9587d0ad 100644
--- a/Xamarin.Forms.Platform.Android/AppCompat/PickerRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/AppCompat/PickerRenderer.cs
@@ -6,6 +6,7 @@ using Android.Content.Res;
 using Android.Text;
 using Android.Widget;
 using Object = Java.Lang.Object;
+using System.Collections.Specialized;
 
 namespace Xamarin.Forms.Platform.Android.AppCompat
 {
@@ -31,7 +32,7 @@ namespace Xamarin.Forms.Platform.Android.AppCompat
 			{
 				_disposed = true;
 
-				((ObservableList<string>)Element.Items).CollectionChanged -= RowsCollectionChanged;
+				((INotifyCollectionChanged)Element.Items).CollectionChanged -= RowsCollectionChanged;
 			}
 
 			base.Dispose(disposing);
@@ -40,11 +41,11 @@ namespace Xamarin.Forms.Platform.Android.AppCompat
 		protected override void OnElementChanged(ElementChangedEventArgs<Picker> e)
 		{
 			if (e.OldElement != null)
-				((ObservableList<string>)e.OldElement.Items).CollectionChanged -= RowsCollectionChanged;
+				((INotifyCollectionChanged)e.OldElement.Items).CollectionChanged -= RowsCollectionChanged;
 
 			if (e.NewElement != null)
 			{
-				((ObservableList<string>)e.NewElement.Items).CollectionChanged += RowsCollectionChanged;
+				((INotifyCollectionChanged)e.NewElement.Items).CollectionChanged += RowsCollectionChanged;
 				if (Control == null)
 				{
 					EditText textField = CreateNativeControl();
diff --git a/Xamarin.Forms.Platform.Android/Renderers/PickerRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/PickerRenderer.cs
index b6d81718..edfe9e7b 100644
--- a/Xamarin.Forms.Platform.Android/Renderers/PickerRenderer.cs
+++ b/Xamarin.Forms.Platform.Android/Renderers/PickerRenderer.cs
@@ -9,6 +9,7 @@ using ADatePicker = Android.Widget.DatePicker;
 using ATimePicker = Android.Widget.TimePicker;
 using Object = Java.Lang.Object;
 using Orientation = Android.Widget.Orientation;
+using System.Collections.Specialized;
 
 namespace Xamarin.Forms.Platform.Android
 {
@@ -30,7 +31,7 @@ namespace Xamarin.Forms.Platform.Android
 			if (disposing && !_isDisposed)
 			{
 				_isDisposed = true;
-				((ObservableList<string>)Element.Items).CollectionChanged -= RowsCollectionChanged;
+				((INotifyCollectionChanged)Element.Items).CollectionChanged -= RowsCollectionChanged;
 			}
 
 			base.Dispose(disposing);
@@ -44,11 +45,11 @@ namespace Xamarin.Forms.Platform.Android
 		protected override void OnElementChanged(ElementChangedEventArgs<Picker> e)
 		{
 			if (e.OldElement != null)
-				((ObservableList<string>)e.OldElement.Items).CollectionChanged -= RowsCollectionChanged;
+				((INotifyCollectionChanged)e.OldElement.Items).CollectionChanged -= RowsCollectionChanged;
 
 			if (e.NewElement != null)
 			{
-				((ObservableList<string>)e.NewElement.Items).CollectionChanged += RowsCollectionChanged;
+				((INotifyCollectionChanged)e.NewElement.Items).CollectionChanged += RowsCollectionChanged;
 				if (Control == null)
 				{
 					var textField = CreateNativeControl();