diff --git a/helpers.ts b/helpers.ts
new file mode 100644
index 0000000..12c90e5
--- /dev/null
+++ b/helpers.ts
@@ -0,0 +1 @@
+export type Nullable<T> = { [K in keyof T]: T[K] | null };
diff --git a/type/json/LineItem.ts b/type/json/LineItem.ts
index bbf662d..e2130f5 100644
--- a/type/json/LineItem.ts
+++ b/type/json/LineItem.ts
@@ -1,3 +1,5 @@
+import { Nullable } from '../../helpers';
+
 export default interface Item {
   id: number;
   properties: { [key: string]: any } | null;
@@ -18,14 +20,14 @@ export default interface Item {
   final_price: number;
   final_line_price: number;
   url: string;
-  featured_image: {
+  featured_image: Nullable<{
     aspect_ratio: number;
     alt: string;
     height: number;
     url: string;
     width: number;
-  };
-  image: string;
+  }>;
+  image: string | null;
   handle: string;
   requires_shipping: boolean;
   product_type: string;