diff --git a/src/HassClient.WS/HASSClientWebSocket.cs b/src/HassClient.WS/HASSClientWebSocket.cs
index a093cda..4e13459 100644
--- a/src/HassClient.WS/HASSClientWebSocket.cs
+++ b/src/HassClient.WS/HASSClientWebSocket.cs
@@ -2,7 +2,6 @@
using HassClient.Models;
using HassClient.Serialization;
using HassClient.WS.Messages;
-using HassClient.WS.Messages.Response;
using HassClient.WS.Serialization;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
diff --git a/src/HassClient.WS/Messages/Commands/Pipeline/PipelineRunMessage.cs b/src/HassClient.WS/Messages/Commands/Pipeline/PipelineRunMessage.cs
index 83b8bc3..b41bf6d 100644
--- a/src/HassClient.WS/Messages/Commands/Pipeline/PipelineRunMessage.cs
+++ b/src/HassClient.WS/Messages/Commands/Pipeline/PipelineRunMessage.cs
@@ -33,11 +33,13 @@ public PipelineRunMessage()
///
/// ID of the pipeline.
///
+ [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
public string Pipeline { get; set; }
///
/// Unique id for conversation. .
///
+ [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
public string ConversationId { get; set; }
///