diff --git a/src/controllers/api/upgradesController.ts b/src/controllers/api/upgradesController.ts
index 8531c7e9..568a7cf4 100644
--- a/src/controllers/api/upgradesController.ts
+++ b/src/controllers/api/upgradesController.ts
@@ -107,10 +107,11 @@ export const upgradesController: RequestHandler = async (req, res) => {
                             // Handle swapping mod to a different slot
                             arr[arr.indexOf(upgrade.ItemId.$id)] = "";
                         }
-                        arr[upgrade.Slot - 1] = upgrade.ItemId.$id;
                         // We need to convert RawUpgrade into Upgrade once it's attached
                         const rawUpgrade = inventory.RawUpgrades.find(x => x.ItemType == upgrade.ItemType);
                         if (rawUpgrade) {
+                            const newId = new Types.ObjectId().toString();
+                            arr[upgrade.Slot - 1] = newId;
                             addMods(inventory, [
                                 {
                                     ItemType: upgrade.ItemType,
@@ -120,8 +121,10 @@ export const upgradesController: RequestHandler = async (req, res) => {
                             inventory.Upgrades.push({
                                 UpgradeFingerprint: `{"lvl":0}`,
                                 ItemType: upgrade.ItemType,
-                                _id: upgrade.ItemId.$id
+                                _id: newId
                             });
+                        } else {
+                            arr[upgrade.Slot - 1] = upgrade.ItemId.$id;
                         }
                     }
                 });