diff --git a/client/src/pages/api/openapi/v1/chat/completions.ts b/client/src/pages/api/openapi/v1/chat/completions.ts
index b0f7a4f85..0bcda9e66 100644
--- a/client/src/pages/api/openapi/v1/chat/completions.ts
+++ b/client/src/pages/api/openapi/v1/chat/completions.ts
@@ -223,7 +223,7 @@ export default withNextCors(async function handler(req: NextApiRequest, res: Nex
     } = await (async () => {
       if (stream) {
         // 创建响应流
-        res.setHeader('Content-Type', 'text/event-stream;charset-utf-8');
+        res.setHeader('Content-Type', 'text/event-stream;charset=utf-8');
         res.setHeader('Access-Control-Allow-Origin', '*');
         res.setHeader('Transfer-Encoding', 'chunked');
         res.setHeader('X-Accel-Buffering', 'no');
diff --git a/client/src/service/utils/chat/index.ts b/client/src/service/utils/chat/index.ts
index 22d66c71e..2b67cf2d5 100644
--- a/client/src/service/utils/chat/index.ts
+++ b/client/src/service/utils/chat/index.ts
@@ -122,7 +122,7 @@ export const resStreamResponse = async ({
   model: ChatModelType;
 }) => {
   // 创建响应流
-  res.setHeader('Content-Type', 'text/event-stream;charset-utf-8');
+  res.setHeader('Content-Type', 'text/event-stream;charset=utf-8');
   res.setHeader('Access-Control-Allow-Origin', '*');
   res.setHeader('X-Accel-Buffering', 'no');
   res.setHeader('Cache-Control', 'no-cache, no-transform');