diff --git a/templates/types/streaming/express/README-template.md b/templates/types/streaming/express/README-template.md
index 7ea94ab755535aefd4d5edc9f20a5908d7fedead..0e9d796106725e9d9ebaa653fa5471e807ee1760 100644
--- a/templates/types/streaming/express/README-template.md
+++ b/templates/types/streaming/express/README-template.md
@@ -18,7 +18,7 @@ Then call the express API endpoint `/api/chat` to see the result:
 
 ```
 curl --location 'localhost:8000/api/chat' \
---header 'Content-Type: application/json' \
+--header 'Content-Type: text/plain' \
 --data '{ "messages": [{ "role": "user", "content": "Hello" }] }'
 ```