diff --git a/packages/app/src/__tests__/app.test.ts b/packages/app/src/__tests__/app.test.ts
index dbdc032..128a4b0 100644
--- a/packages/app/src/__tests__/app.test.ts
+++ b/packages/app/src/__tests__/app.test.ts
@@ -67,7 +67,7 @@ describe('app', async () => {
   });
 
   rpc.add({
-    '/add': function (a: string, b: string) {
+    '/add': function (a: string) {
       return { a: a };
     },
   });