diff --git a/src/createInstance.ts b/src/createInstance.ts
index fe04fcf2a..108a3c348 100644
--- a/src/createInstance.ts
+++ b/src/createInstance.ts
@@ -260,6 +260,7 @@ export function createInstance(
       keyof Omit<AppConfig, 'isNativeTag'>,
       any
     ][]) {
+      // @ts-expect-error https://github.com/vuejs/test-utils/issues/2483
       app.config[k] = isObject(app.config[k])
         ? Object.assign(app.config[k]!, v)
         : v