diff --git a/.oxlintrc.json b/.oxlintrc.json
index e371e7e5fbd9..6f646aebe7f1 100644
--- a/.oxlintrc.json
+++ b/.oxlintrc.json
@@ -64,7 +64,7 @@
     "node/no-exports-assign": "error",
     "eslint-plugin-unicorn/prefer-set-size": "error",
     "oxc/no-accumulating-spread": "error",
-    "oxc/no-async-endpoint-handlers": "off",
+    "oxc/no-async-endpoint-handlers": "error",
     "oxc/no-map-spread": "error",
     "promise/no-callback-in-promise": "error",
     "promise/no-multiple-resolved": "error",
@@ -228,6 +228,12 @@
     "**/node_modules/**"
   ],
   "overrides": [
+    {
+      "files": ["extensions/browser/src/browser/routes/*.ts"],
+      "rules": {
+        "oxc/no-async-endpoint-handlers": "off"
+      }
+    },
     {
       "files": [
         "packages/markdown-core/**/*.ts",
diff --git a/extensions/browser/src/browser/routes/dispatcher.abort.test.ts b/extensions/browser/src/browser/routes/dispatcher.abort.test.ts
index 83eb72469829..7d429d2fc05e 100644
--- a/extensions/browser/src/browser/routes/dispatcher.abort.test.ts
+++ b/extensions/browser/src/browser/routes/dispatcher.abort.test.ts
@@ -7,55 +7,40 @@ let createBrowserRouteDispatcher: typeof import("./dispatcher.js").createBrowser
 describe("browser route dispatcher (abort)", () => {
   beforeAll(async () => {
     vi.doMock("./index.js", () => {
-      const asyncRoute = <Req, Res>(
-        handler: (req: Req, res: Res) => void | Promise<void>,
-      ): ((req: Req, res: Res) => void | Promise<void>) => {
-        return (req, res) => handler(req, res);
-      };
       return {
         registerBrowserRoutes(app: { get: (path: string, handler: unknown) => void }) {
           app.get(
             "/slow",
-            asyncRoute(
-              async (req: { signal?: AbortSignal }, res: { json: (body: unknown) => void }) => {
-                const signal = req.signal;
-                await new Promise<void>((resolve, reject) => {
-                  if (signal?.aborted) {
-                    reject(
-                      toLintErrorObject(
-                        signal.reason ?? new Error("aborted"),
-                        "Non-Error rejection",
-                      ),
-                    );
-                    return;
-                  }
-                  const onAbort = () =>
-                    reject(
-                      toLintErrorObject(
-                        signal?.reason ?? new Error("aborted"),
-                        "Non-Error rejection",
-                      ),
-                    );
-                  signal?.addEventListener("abort", onAbort, { once: true });
-                  queueMicrotask(() => {
-                    signal?.removeEventListener("abort", onAbort);
-                    resolve();
-                  });
+            async (req: { signal?: AbortSignal }, res: { json: (body: unknown) => void }) => {
+              const signal = req.signal;
+              await new Promise<void>((resolve, reject) => {
+                if (signal?.aborted) {
+                  reject(
+                    toLintErrorObject(signal.reason ?? new Error("aborted"), "Non-Error rejection"),
+                  );
+                  return;
+                }
+                const onAbort = () =>
+                  reject(
+                    toLintErrorObject(
+                      signal?.reason ?? new Error("aborted"),
+                      "Non-Error rejection",
+                    ),
+                  );
+                signal?.addEventListener("abort", onAbort, { once: true });
+                queueMicrotask(() => {
+                  signal?.removeEventListener("abort", onAbort);
+                  resolve();
                 });
-                res.json({ ok: true });
-              },
-            ),
+              });
+              res.json({ ok: true });
+            },
           );
           app.get(
             "/echo/:id",
-            asyncRoute(
-              (
-                req: { params?: Record<string, string> },
-                res: { json: (body: unknown) => void },
-              ) => {
-                res.json({ id: req.params?.id ?? null });
-              },
-            ),
+            (req: { params?: Record<string, string> }, res: { json: (body: unknown) => void }) => {
+              res.json({ id: req.params?.id ?? null });
+            },
           );
         },
       };