diff --git a/packages/runtime-core/__tests__/apiWatch.spec.ts b/packages/runtime-core/__tests__/apiWatch.spec.ts
index 3a9ad4fca79..b25635e664e 100644
--- a/packages/runtime-core/__tests__/apiWatch.spec.ts
+++ b/packages/runtime-core/__tests__/apiWatch.spec.ts
@@ -161,8 +161,8 @@ describe('api: watch', () => {
   it('directly watching reactive object with explicit deep: false', async () => {
     const src = reactive({
       state: {
-        count: 0
-      }
+        count: 0,
+      },
     })
     let dummy
     watch(
@@ -171,8 +171,8 @@ describe('api: watch', () => {
         dummy = state?.count
       },
       {
-        deep: false
-      }
+        deep: false,
+      },
     )
 
     // nested should not trigger
diff --git a/packages/runtime-core/src/apiWatch.ts b/packages/runtime-core/src/apiWatch.ts
index 85507a42bcb..0c13e72988f 100644
--- a/packages/runtime-core/src/apiWatch.ts
+++ b/packages/runtime-core/src/apiWatch.ts
@@ -467,7 +467,7 @@ export function traverse(
   value: unknown,
   depth?: number,
   currentDepth = 0,
-  seen?: Set<unknown>
+  seen?: Set<unknown>,
 ) {
   if (!isObject(value) || (value as any)[ReactiveFlags.SKIP]) {
     return value