diff --git a/src/Uno.UI/Mock/DispatcherTimer.net.cs b/src/Uno.UI/Mock/DispatcherTimer.net.cs
deleted file mode 100644
index af2bd4c23a5142583763e7c5241c99fc21789268..0000000000000000000000000000000000000000
--- a/src/Uno.UI/Mock/DispatcherTimer.net.cs
+++ /dev/null
@@ -1,26 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace Windows.UI.Xaml
-{
-	partial class DispatcherTimer
-	{
-		private void StartNative(TimeSpan interval)
-		{
-			; // Not supported in unit tests
-		}
-
-		private void StartNative(TimeSpan dueTime, TimeSpan interval)
-		{
-			; // Not supported in unit tests
-		}
-
-		private void StopNative()
-		{
-			; // Not supported in unit tests
-		}
-	}
-}
diff --git a/src/Uno.UI/Mock/DispatcherTimer.netstdref.cs b/src/Uno.UI/Mock/DispatcherTimer.netstdref.cs
deleted file mode 100644
index af5d3abffb767d270f6271bb5077bc109b95b4ce..0000000000000000000000000000000000000000
--- a/src/Uno.UI/Mock/DispatcherTimer.netstdref.cs
+++ /dev/null
@@ -1,26 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace Windows.UI.Xaml
-{
-	partial class DispatcherTimer
-	{
-		private void StartNative(TimeSpan interval)
-		{
-			throw new NotSupportedException();
-		}
-
-		private void StartNative(TimeSpan dueTime, TimeSpan interval)
-		{
-			throw new NotSupportedException();
-		}
-
-		private void StopNative()
-		{
-			throw new NotSupportedException();
-		}
-	}
-}
diff --git a/src/Uno.UWP/System/DispatcherQueueTimer.netstd.cs b/src/Uno.UWP/System/DispatcherQueueTimer.netstd.cs
index 6b3a853a1d5428bb3fd76eb83d70d2a3ecdaec4a..4193e1513c050642fa409b91263fb088c553e91d 100644
--- a/src/Uno.UWP/System/DispatcherQueueTimer.netstd.cs
+++ b/src/Uno.UWP/System/DispatcherQueueTimer.netstd.cs
@@ -26,7 +26,7 @@ partial class DispatcherQueueTimer
 	private void DispatchRaiseTick()
 	{
 #if __WASM__
-		if (!CoreDispatcher.Main.IsThreadingSupported)
+		if (!CoreDispatcher.IsThreadingSupported)
 		{
 			RaiseTick();
 			return;