diff --git a/packages/runtime-core/src/apiSetupHelpers.ts b/packages/runtime-core/src/apiSetupHelpers.ts
index 2ddaeb509ad..05eefd3f2de 100644
--- a/packages/runtime-core/src/apiSetupHelpers.ts
+++ b/packages/runtime-core/src/apiSetupHelpers.ts
@@ -319,7 +319,14 @@ type InferDefaults<T> = {
   [K in keyof T]?: InferDefault<T, T[K]>
 }
 
-type NativeType = null | number | string | boolean | symbol | Function
+type NativeType =
+  | null
+  | undefined
+  | number
+  | string
+  | boolean
+  | symbol
+  | Function
 
 type InferDefault<P, T> =
   | ((props: P) => T & {})