diff --git a/contexts/toolsets/mira_model_toolset.py b/contexts/toolsets/mira_model_toolset.py
index 8c9b134..5c774f9 100644
--- a/contexts/toolsets/mira_model_toolset.py
+++ b/contexts/toolsets/mira_model_toolset.py
@@ -336,7 +336,7 @@ async def stratify_request(self, server, target_stream, data):
         self.context.kernel.send_response(
             "iopub", "stratify_response", content, parent_header=message.header
         )
-        await self.send_mira_preview_message(parent_header=message.parent_header)
+        await self.send_mira_preview_message(parent_header=message.header)
 
 
     async def reset_request(self, server, target_stream, data):
@@ -357,4 +357,4 @@ async def reset_request(self, server, target_stream, data):
         self.context.kernel.send_response(
             "iopub", "reset_response", content, parent_header=message.header
         )
-        await self.send_mira_preview_message(parent_header=message.parent_header)
+        await self.send_mira_preview_message(parent_header=message.header)