diff --git a/apps/frontend/src/app/atoms/client.ts b/apps/frontend/src/app/atoms/client.ts
index dc08174..791bf55 100644
--- a/apps/frontend/src/app/atoms/client.ts
+++ b/apps/frontend/src/app/atoms/client.ts
@@ -84,7 +84,6 @@ export const eventStreamAtom = atom(
           Accept: "text/event-stream",
         },
         signal: newController.signal,
-        mode: "no-cors",
       });
 
       if (!response.ok) {
diff --git a/apps/frontend/src/app/routes/mock.tsx b/apps/frontend/src/app/routes/mock.tsx
index d961841..07b8584 100644
--- a/apps/frontend/src/app/routes/mock.tsx
+++ b/apps/frontend/src/app/routes/mock.tsx
@@ -76,7 +76,6 @@ export default function Page() {
             headers: {
               "Content-Type": "application/json",
             },
-            mode: "no-cors",
             body: JSON.stringify({
               widthRandom: randomWidth,
               heightRandom: randomHeight,