diff --git a/src/Uno.UWP/UI/Popups/MessageDialog.iOS.cs b/src/Uno.UWP/UI/Popups/MessageDialog.iOS.cs
index fdf2e179a7e1..bcaed3375400 100644
--- a/src/Uno.UWP/UI/Popups/MessageDialog.iOS.cs
+++ b/src/Uno.UWP/UI/Popups/MessageDialog.iOS.cs
@@ -48,13 +48,13 @@ private async Task<IUICommand> ShowInner(CancellationToken ct)
 			{
 				alertController.PreferredAction = alertActions.ElementAtOrDefault((int)DefaultCommandIndex);
 			}
-
+			
 			using (ct.Register(() =>
 				{
 					// If the cancellation token itself gets cancelled, we cancel as well.
 					result.TrySetCanceled();
 					UIApplication.SharedApplication.KeyWindow?.RootViewController?.DismissViewController(false, () => { });
-				}))
+				}, useSynchronizationContext: true))
 			{
 				await _viewControllerAccess.WaitAsync(ct);