diff --git a/src/apis/inject.ts b/src/apis/inject.ts
index a8feaf2d..e94c7a2b 100644
--- a/src/apis/inject.ts
+++ b/src/apis/inject.ts
@@ -47,7 +47,12 @@ export function inject<T>(key: InjectionKey<T> | string): T | undefined
 export function inject<T>(
   key: InjectionKey<T> | string,
   defaultValue: T,
-  treatDefaultAsFactory?: boolean
+  treatDefaultAsFactory?: false
+): T
+export function inject<T>(
+  key: InjectionKey<T> | string,
+  defaultValue: T | (() => T),
+  treatDefaultAsFactory?: true
 ): T
 export function inject(
   key: InjectionKey<any> | string,
diff --git a/src/reactivity/ref.ts b/src/reactivity/ref.ts
index a7a73a44..044a63df 100644
--- a/src/reactivity/ref.ts
+++ b/src/reactivity/ref.ts
@@ -113,7 +113,7 @@ export function isRef<T>(value: any): value is Ref<T> {
   return value instanceof RefImpl
 }
 
-export function unref<T>(ref: T): T extends Ref<infer V> ? V : T {
+export function unref<T>(ref: T | Ref<T>): T {
   return isRef(ref) ? (ref.value as any) : ref
 }