diff --git a/src/PepperDash.Essentials.Core/Routing/RouteSwitchDescriptor.cs b/src/PepperDash.Essentials.Core/Routing/RouteSwitchDescriptor.cs
index 080b932e..9e4aaca1 100644
--- a/src/PepperDash.Essentials.Core/Routing/RouteSwitchDescriptor.cs
+++ b/src/PepperDash.Essentials.Core/Routing/RouteSwitchDescriptor.cs
@@ -23,9 +23,9 @@
 		public override string ToString()
 		{
             if (SwitchingDevice is IRouting)
-                return $"{SwitchingDevice?.Key} switches output {OutputPort.Key} to input {InputPort.Key}";
+                return $"{SwitchingDevice?.Key} switches output {OutputPort?.Key} to input {InputPort?.Key}";
             else
-                return $"{SwitchingDevice.Key} switches to input {InputPort.Key}";
+                return $"{SwitchingDevice?.Key} switches to input {InputPort?.Key}";
 		}
 	}
 
diff --git a/src/PepperDash.Essentials.Core/Routing/RoutingFeedbackManager.cs b/src/PepperDash.Essentials.Core/Routing/RoutingFeedbackManager.cs
index 28fefa96..e8809191 100644
--- a/src/PepperDash.Essentials.Core/Routing/RoutingFeedbackManager.cs
+++ b/src/PepperDash.Essentials.Core/Routing/RoutingFeedbackManager.cs
@@ -217,7 +217,7 @@ namespace PepperDash.Essentials.Core.Routing
                     var currentRoute = midpoint.CurrentRoutes.FirstOrDefault(route => {
                         Debug.LogMessage(Serilog.Events.LogEventLevel.Verbose, "Checking {route} against {tieLine}", this, route, tieLine);
 
-                        return route.OutputPort.Key == tieLine.SourcePort.Key && route.OutputPort.ParentDevice.Key == tieLine.SourcePort.ParentDevice.Key;
+                        return route.OutputPort?.Key == tieLine.SourcePort.Key && route.OutputPort?.ParentDevice.Key == tieLine.SourcePort.ParentDevice.Key;
                     });
 
                     if (currentRoute == null)