diff --git a/src/@types/LocalObjectStorage.d.ts b/src/@types/LocalObjectStorage.d.ts
index 0f3e9e1f..cb37f240 100644
--- a/src/@types/LocalObjectStorage.d.ts
+++ b/src/@types/LocalObjectStorage.d.ts
@@ -29,7 +29,9 @@ declare class LocalObjectStorage {
 
     get length(): number;
 
-    getItem<T = any>(key: string, fallback?: T): T;
+    getItem<T = any>(key: string): T | string | null;
+
+    getItem<T = any>(key: string, fallback: T): T;
 
     setItem<T = any>(key: string, value: T): void;