diff --git a/UIX/Microsoft/Iris/Queues/Dispatcher.cs b/UIX/Microsoft/Iris/Queues/Dispatcher.cs
index 0efc4a9..18c39ae 100644
--- a/UIX/Microsoft/Iris/Queues/Dispatcher.cs
+++ b/UIX/Microsoft/Iris/Queues/Dispatcher.cs
@@ -73,7 +73,7 @@ namespace Microsoft.Iris.Queues
                     QueueItem nextItem = queue.GetNextItem();
                     if (nextItem != null)
                     {
-                        Application.Debugger.LogDispatcher(nextItem.ToDebugPacketString());
+                        Application.Debugger?.LogDispatcher(nextItem.ToDebugPacketString());
                         nextItem.Dispatch();
                     }
                     else