diff --git a/src/controllers/api/inventoryController.ts b/src/controllers/api/inventoryController.ts
index 805df53d..bf71ae42 100644
--- a/src/controllers/api/inventoryController.ts
+++ b/src/controllers/api/inventoryController.ts
@@ -202,8 +202,8 @@ export const getInventoryResponse = async (
 
     if (config.universalPolarityEverywhere) {
         const Polarity: IPolarity[] = [];
-        // 12 is needed for necramechs. 14 is needed for plexus/crewshipharness.
-        for (let i = 0; i != 14; ++i) {
+        // 12 is needed for necramechs. 15 is needed for plexus/crewshipharness.
+        for (let i = 0; i != 15; ++i) {
             Polarity.push({
                 Slot: i,
                 Value: ArtifactPolarity.Any