diff --git a/src/types.ts b/src/types.ts
index 472dd57..d063292 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -21,4 +21,4 @@ export interface UpdateOptions {
   replaceMerge?: any;
   transition?: any;
 }
-export type UpdateOptionsInjection = UpdateOptions | null | Ref<UpdateOptions null>;
+export type UpdateOptionsInjection = UpdateOptions | null | Ref<UpdateOptions | null>;