diff --git a/src/ICSharpCore.Primitives/DisplayData.cs b/src/ICSharpCore.Primitives/DisplayData.cs
index adb6c20..8a41b12 100644
--- a/src/ICSharpCore.Primitives/DisplayData.cs
+++ b/src/ICSharpCore.Primitives/DisplayData.cs
@@ -13,9 +13,6 @@ namespace ICSharpCore.Primitives
     /// </summary>
     public class DisplayData
     {
-        [JsonProperty("source")]
-        public string Source { get; set; }
-
         [JsonProperty("data")]
         public JObject Data { get; set; }
 
@@ -27,7 +24,6 @@ public class DisplayData
 
         public DisplayData()
         {
-            Source = string.Empty;
             Data = new JObject();
             MetaData = new JObject();
             Transient = new JObject();
diff --git a/src/ICSharpCore/Kernels/Kernel.cs b/src/ICSharpCore/Kernels/Kernel.cs
index 62f1778..88c4a08 100644
--- a/src/ICSharpCore/Kernels/Kernel.cs
+++ b/src/ICSharpCore/Kernels/Kernel.cs
@@ -68,7 +68,7 @@ public void Start()
                             {
                                 var message = new Message<KernelInfoRequest>(header, raw);
                                 iopubSender.Send(message, 
-                                    new Status { ExecutionState = StatusType.Busy }, 
+                                    new Status { ExecutionState = StatusType.Idle },
                                     MessageType.Status);
                                 _kernelInfoHandler.Process(message);
                             }
@@ -80,6 +80,9 @@ public void Start()
                                     new Status { ExecutionState = StatusType.Busy },
                                     MessageType.Status);
                                 _executeHandler.Process(message);
+                                iopubSender.Send(message,
+                                    new Status { ExecutionState = StatusType.Idle },
+                                    MessageType.Status);
                             }
                             break;
                     }