diff --git a/src/rest-client-v5.ts b/src/rest-client-v5.ts
index 040ed50..7f92c80 100644
--- a/src/rest-client-v5.ts
+++ b/src/rest-client-v5.ts
@@ -1379,10 +1379,10 @@ export class RestClientV5 extends BaseRestClient {
    *
    * DANGER: BE CAREFUL! The sub API key used to call this interface will be invalid immediately.
    */
-  deleteSubApiKey(apikey?: string): Promise<APIResponseV3WithTime<{}>> {
+  deleteSubApiKey(params?: { apikey?: string; ): Promise<APIResponseV3WithTime<{}>> {
     return this.postPrivate(
       '/v5/user/delete-sub-api',
-      apikey ? { apikey } : undefined,
+      params,
     );
   }