diff --git a/src/Avalonia.Base/Threading/AvaloniaSynchronizationContext.cs b/src/Avalonia.Base/Threading/AvaloniaSynchronizationContext.cs
index 166832398f..f920fec82e 100644
--- a/src/Avalonia.Base/Threading/AvaloniaSynchronizationContext.cs
+++ b/src/Avalonia.Base/Threading/AvaloniaSynchronizationContext.cs
@@ -18,6 +18,8 @@ namespace Avalonia.Threading
         public AvaloniaSynchronizationContext(INonPumpingPlatformWaitProvider waitProvider)
         {
             _waitProvider = waitProvider;
+            if (_waitProvider != null)
+                SetWaitNotificationRequired();
         }
 
         /// <summary>