diff --git a/src/controllers/api/inventoryController.ts b/src/controllers/api/inventoryController.ts
index 2cd5f6bd..d614b147 100644
--- a/src/controllers/api/inventoryController.ts
+++ b/src/controllers/api/inventoryController.ts
@@ -195,7 +195,7 @@ export const getInventoryResponse = async (
 
     if (config.universalPolarityEverywhere) {
         const Polarity: IPolarity[] = [];
-        for (let i = 0; i != 10; ++i) {
+        for (let i = 0; i != 12; ++i) {
             Polarity.push({
                 Slot: i,
                 Value: ArtifactPolarity.Any