diff --git a/front/pages/api/v1/w/[wId]/assistant/conversations/[cId]/messages/index.ts b/front/pages/api/v1/w/[wId]/assistant/conversations/[cId]/messages/index.ts
index 4d93be2cdf09..750291e0a360 100644
--- a/front/pages/api/v1/w/[wId]/assistant/conversations/[cId]/messages/index.ts
+++ b/front/pages/api/v1/w/[wId]/assistant/conversations/[cId]/messages/index.ts
@@ -139,5 +139,5 @@ async function handler(
 }
 
 export default withPublicAPIAuthentication(handler, {
-  requiredScope: "update:conversation",
+  requiredScopes: { POST: "update:conversation" },
 });