diff --git a/Implab.Diagnostics.Interactive/InteractiveListener.cs b/Implab.Diagnostics.Interactive/InteractiveListener.cs
--- a/Implab.Diagnostics.Interactive/InteractiveListener.cs
+++ b/Implab.Diagnostics.Interactive/InteractiveListener.cs
@@ -18,7 +18,7 @@ namespace Implab.Diagnostics.Interactive
         
         readonly IPromise m_guiFinished;
         
-        readonly MTQueue<TraceViewItem> m_queue = new MTQueue<TraceViewItem>();
+        readonly SimpleAsyncQueue<TraceViewItem> m_queue = new SimpleAsyncQueue<TraceViewItem>();
         readonly AutoResetEvent m_queueEvent = new AutoResetEvent(false);
         
         int m_queueLength;