diff --git a/Example.Frontend/Program.cs b/Example.Frontend/Program.cs
index 63a25b2..842c0dd 100644
--- a/Example.Frontend/Program.cs
+++ b/Example.Frontend/Program.cs
@@ -27,6 +27,8 @@ class Program
         builder.Modules.Add(new BasicExecutionModule());
         builder.Modules.Add(new CoCodegenMethodRepository());
         builder.UseCollectableContextRepository();
+        builder.Modules.Add(new CancellationRepository());
+
         builder.Build();
 
 
diff --git a/mROA/Implementation/Frontend/RequestExtractor.cs b/mROA/Implementation/Frontend/RequestExtractor.cs
index 25232bb..6d58ce6 100644
--- a/mROA/Implementation/Frontend/RequestExtractor.cs
+++ b/mROA/Implementation/Frontend/RequestExtractor.cs
@@ -76,9 +76,20 @@ namespace mROA.Implementation.Frontend
 
                     var result = _executeModule.Execute(request, _contextRepository, _representationModule);
 
-                    var resultType = result is FinalCommandExecution
-                        ? MessageType.FinishedCommandExecution
-                        : MessageType.ExceptionCommandExecution;
+                    var resultType = MessageType.Unknown;
+
+                    switch (result)
+                    {
+                        case FinalCommandExecution:
+                            resultType = MessageType.FinishedCommandExecution;
+                            break;
+                        case AsyncCommandExecution:
+                            resultType = MessageType.AsyncCommandExecution;
+                            break;
+                        case ExceptionCommandExecution:
+                            resultType = MessageType.ExceptionCommandExecution;
+                            break;
+                    }
 
                     _representationModule.PostCallMessage(request.Id, resultType, result, result.GetType());
                 }
diff --git a/mROA/Implementation/NetworkMessage.cs b/mROA/Implementation/NetworkMessage.cs
index 6cb302b..7b04c12 100644
--- a/mROA/Implementation/NetworkMessage.cs
+++ b/mROA/Implementation/NetworkMessage.cs
@@ -15,6 +15,6 @@ namespace mROA.Implementation
 
     public enum MessageType
     {
-        Unknown, FinishedCommandExecution, ExceptionCommandExecution, AsyncCancelCommandExecution, CallRequest, IdAssigning, CancelRequest
+        Unknown, FinishedCommandExecution, ExceptionCommandExecution, AsyncCommandExecution, CallRequest, IdAssigning, CancelRequest
     }
 }
\ No newline at end of file