diff --git a/src/EditorFeatures/Core/Implementation/ForegroundNotification/ForegroundNotificationService.cs b/src/EditorFeatures/Core/Implementation/ForegroundNotification/ForegroundNotificationService.cs
index 3cf7f628886e4550a017a9d2d7193800c5731d97..1aed8a195646861bc4b8196879e005f41ee6d278 100644
--- a/src/EditorFeatures/Core/Implementation/ForegroundNotification/ForegroundNotificationService.cs
+++ b/src/EditorFeatures/Core/Implementation/ForegroundNotification/ForegroundNotificationService.cs
@@ -52,6 +52,12 @@ public void RegisterNotification(Action action, int delay, IAsyncToken asyncToke
         {
             Contract.Requires(delay >= 0);
 
+            if (cancellationToken.IsCancellationRequested)
+            {
+                asyncToken?.Dispose();
+                return;
+            }
+
             var current = Environment.TickCount;
 
             _workQueue.Enqueue(new PendingWork(current + delay, action, asyncToken, cancellationToken));
@@ -61,6 +67,12 @@ public void RegisterNotification(Func<bool> action, int delay, IAsyncToken async
         {
             Contract.Requires(delay >= 0);
 
+            if (cancellationToken.IsCancellationRequested)
+            {
+                asyncToken?.Dispose();
+                return;
+            }
+
             var current = Environment.TickCount;
 
             _workQueue.Enqueue(new PendingWork(current + delay, action, asyncToken, cancellationToken));