diff --git a/samples/client/petstore/typescript-fetch/builds/allOf-readonly/runtime.ts b/samples/client/petstore/typescript-fetch/builds/allOf-readonly/runtime.ts
index 22b76e32c8d..6f8bb6b1925 100644
--- a/samples/client/petstore/typescript-fetch/builds/allOf-readonly/runtime.ts
+++ b/samples/client/petstore/typescript-fetch/builds/allOf-readonly/runtime.ts
@@ -234,21 +234,21 @@ function isFormData(value: any): value is FormData {
 }
 
 export class ResponseError extends Error {
-    name: "ResponseError" = "ResponseError";
+    override name: "ResponseError" = "ResponseError";
     constructor(public response: Response, msg?: string) {
         super(msg);
     }
 }
 
 export class FetchError extends Error {
-    name: "FetchError" = "FetchError";
+    override name: "FetchError" = "FetchError";
     constructor(public cause: Error, msg?: string) {
         super(msg);
     }
 }
 
 export class RequiredError extends Error {
-    name: "RequiredError" = "RequiredError";
+    override name: "RequiredError" = "RequiredError";
     constructor(public field: string, msg?: string) {
         super(msg);
     }