diff --git a/app/client/platforms/openai.ts b/app/client/platforms/openai.ts
index fd4eb59ce..7abed6cd2 100644
--- a/app/client/platforms/openai.ts
+++ b/app/client/platforms/openai.ts
@@ -64,6 +64,8 @@ export class ChatGPTApi implements LLMApi {
 
     const requestPayload = {
       messages,
+      options.functions,
+      function_call: "auto",
       stream: options.config.stream,
       model: modelConfig.model,
       temperature: modelConfig.temperature,