diff --git a/src/store/index.js b/src/store/index.js
index c4c3b903..f9eb378d 100644
--- a/src/store/index.js
+++ b/src/store/index.js
@@ -1841,7 +1841,7 @@ export const useMainStore = defineStore({
         },
         updateSupportingItems(partsData) {
             if (partsData == null) {
-                this.order.lineItems.supportingItems = null;
+                this.order.lineItems.supportingItems = [];
                 return;
             }