diff --git a/UIX/Microsoft/Iris/Session/DeferredCall.cs b/UIX/Microsoft/Iris/Session/DeferredCall.cs
index 93855dc..07dd058 100644
--- a/UIX/Microsoft/Iris/Session/DeferredCall.cs
+++ b/UIX/Microsoft/Iris/Session/DeferredCall.cs
@@ -160,7 +160,7 @@ namespace Microsoft.Iris.Session
 
         public override string ToDebugPacketString()
         {
-            string packetString = _target.Target == null
+            string packetString = _target?.Target == null
                 ? string.Empty
                 : $"{_target.Target}.";