diff --git a/src/services/missionInventoryUpdateService.ts b/src/services/missionInventoryUpdateService.ts
index 7477c33c..ca71dc82 100644
--- a/src/services/missionInventoryUpdateService.ts
+++ b/src/services/missionInventoryUpdateService.ts
@@ -1463,7 +1463,9 @@ export const addMissionRewards = async (
 
             if (inventory.Nemesis.Faction == "FC_INFESTATION") {
                 inventory.Nemesis.MissionCount += 1;
-                inventory.Nemesis.HenchmenKilled = Math.min(inventory.Nemesis.HenchmenKilled + 5, 95); // 5 progress per mission until 95
+                let antivirusGain = 5;
+                antivirusGain *= inventory.nemesisHenchmenKillsMultiplierInfestation ?? 1;
+                inventory.Nemesis.HenchmenKilled = Math.min(inventory.Nemesis.HenchmenKilled + antivirusGain, 95); // 5 progress per mission until 95
 
                 inventoryChanges.Nemesis.MissionCount ??= 0;
                 inventoryChanges.Nemesis.MissionCount += 1;