diff --git a/lib/src/types/ItemType.d.ts b/lib/src/types/ItemType.d.ts
index dd632337..c0e4d3f4 100644
--- a/lib/src/types/ItemType.d.ts
+++ b/lib/src/types/ItemType.d.ts
@@ -16,5 +16,5 @@ export interface ItemType {
   relations: boolean
   template: string
   questlog: boolean
-  custom_profile_url: string
+  custom_profile_url?: string
 }