diff --git a/app/client/platforms/openai.ts b/app/client/platforms/openai.ts
index 2a28debd..d833e8c5 100644
--- a/app/client/platforms/openai.ts
+++ b/app/client/platforms/openai.ts
@@ -99,7 +99,9 @@ export class ChatGPTApi implements LLMApi {
 
             if (
               !res.ok ||
-              res.headers.get("content-type") !== EventStreamContentType ||
+              !res.headers
+                .get("content-type")
+                ?.startsWith(EventStreamContentType) ||
               res.status !== 200
             ) {
               const responseTexts = [responseText];