diff --git a/src/services/questService.ts b/src/services/questService.ts
index e53126c5..1916ca0c 100644
--- a/src/services/questService.ts
+++ b/src/services/questService.ts
@@ -22,10 +22,10 @@ export const updateQuestKey = (
         throw new Error("more than 1 quest key not supported");
     }
 
-    const questKeyIndex = inventory.QuestKeys.findIndex(questKey => questKey.ItemType === questKeyUpdate[0].ItemType);
-
+    let questKeyIndex = inventory.QuestKeys.findIndex(questKey => questKey.ItemType === questKeyUpdate[0].ItemType);
     if (questKeyIndex === -1) {
-        throw new Error(`quest key ${questKeyUpdate[0].ItemType} not found`);
+        // it's possible the quest key was not in already in the inventory but the quest was still available due to unlockAllQuests
+        questKeyIndex = inventory.QuestKeys.push({ ItemType: questKeyUpdate[0].ItemType }) - 1;
     }
 
     inventory.QuestKeys[questKeyIndex] = questKeyUpdate[0];