diff --git a/src/api_productions.ts b/src/api_productions.ts
index e12c312..da0f5db 100644
--- a/src/api_productions.ts
+++ b/src/api_productions.ts
@@ -753,6 +753,7 @@ const apiProductions: FastifyPluginCallback<ApiProductionsOptions> = (
         description:
           'Provide client local SDP description as request body to finalize connection protocol.',
         params: SessionIdParams,
+        body: SdpAnswer,
         response: {
           204: Type.Null(),
           400: Type.String(),