diff --git a/src/services/missionInventoryUpdateService.ts b/src/services/missionInventoryUpdateService.ts
index 95b4e70d..94442f30 100644
--- a/src/services/missionInventoryUpdateService.ts
+++ b/src/services/missionInventoryUpdateService.ts
@@ -871,7 +871,7 @@ export const addFixedLevelRewards = (
     rewards: IMissionRewardExternal,
     inventory: TInventoryDatabaseDocument,
     MissionRewards: IMissionReward[],
-    rewardInfo: IRewardInfo
+    rewardInfo?: IRewardInfo
 ): number => {
     let missionBonusCredits = 0;
     if (rewards.credits) {
@@ -903,7 +903,7 @@ export const addFixedLevelRewards = (
         if (rewards.droptable in ExportRewards) {
             const rotations: number[] = [];
             // This makes it so that /Lotus/Types/Keys/ProteaQuest/ProteaQuestMissionFour gives all 3 Xoris parts
-            if (rewardInfo.VaultsCracked) {
+            if (rewardInfo?.VaultsCracked) {
                 for (let i = 0; i != rewardInfo.VaultsCracked; ++i) {
                     rotations.push(i);
                 }