diff --git a/src/services/missionInventoryUpdateService.ts b/src/services/missionInventoryUpdateService.ts
index a94d2db0..e3621a8e 100644
--- a/src/services/missionInventoryUpdateService.ts
+++ b/src/services/missionInventoryUpdateService.ts
@@ -1160,7 +1160,6 @@ export const addMissionRewards = async (
         if (!alert) {
             logger.warn(`mission completed unknown alert`, { alertId: rewardInfo.alertId });
         } else {
-            inventory.CompletedAlerts ??= [];
             if (inventory.CompletedAlerts.includes(alert._id.$oid)) {
                 logger.debug(`alert ${alert._id.$oid} already completed, skipping alert reward`);
             } else {