diff --git a/packages/runtime-core/src/apiDefineComponent.ts b/packages/runtime-core/src/apiDefineComponent.ts
index 1a22c50ff..b85e3b3b7 100644
--- a/packages/runtime-core/src/apiDefineComponent.ts
+++ b/packages/runtime-core/src/apiDefineComponent.ts
@@ -205,5 +205,7 @@ export function defineComponent<
 
 // implementation, close to no-op
 export function defineComponent(options: unknown) {
-  return isFunction(options) ? { setup: options } : options
+  return isFunction(options)
+    ? { setup: options, name: options.name }
+    : options
 }