diff --git a/packages/core/src/prompts/lesson-assistant/parts/protocol.ts b/packages/core/src/prompts/lesson-assistant/parts/protocol.ts
index 70e613f05..702a18157 100644
--- a/packages/core/src/prompts/lesson-assistant/parts/protocol.ts
+++ b/packages/core/src/prompts/lesson-assistant/parts/protocol.ts
@@ -1,6 +1,7 @@
 import type { TemplateProps } from "..";
 
-const responseFormatWithStructuredOutputs = "{\"response\":\"llmMessage\", patches:[{},{}...], prompt:{}}";
+const responseFormatWithStructuredOutputs =
+  '{"type":"llmMessage", patches:[{},{}...], prompt:{}}';
 const responseFormatWithoutStructuredOutputs = `A series of JSON documents separated using the JSON Text Sequences specification, where each row is separated by the ␞ character and ends with a new line character.
 Your response should be a series of patches followed by one and only one prompt to the user.`;