diff --git a/app/api/progress/[progressId]/route.ts b/app/api/progress/[progressId]/route.ts
index 7dc248de..415190f1 100644
--- a/app/api/progress/[progressId]/route.ts
+++ b/app/api/progress/[progressId]/route.ts
@@ -58,7 +58,6 @@ export async function GET(req: NextRequest, { params }: { params: Promise<{ prog
       "Content-Type": "text/event-stream",
       "Cache-Control": "no-cache, no-transform",
       Connection: "keep-alive",
-      "Access-Control-Allow-Origin": "*",
     },
   })
 }