diff --git a/src/store/index.js b/src/store/index.js
index 44e95212..5add699d 100644
--- a/src/store/index.js
+++ b/src/store/index.js
@@ -1536,7 +1536,7 @@ export const useMainStore = defineStore({
 
         updateSupportingItems(partsData) {
             if (partsData == null) {
-                this.order.lineItems.supportingItems = partsData;
+                this.order.lineItems.supportingItems = null;
                 return;
             }