diff --git a/src/mixins/base-mixin.js b/src/mixins/base-mixin.js
index 1266d125b..02f1ed960 100644
--- a/src/mixins/base-mixin.js
+++ b/src/mixins/base-mixin.js
@@ -134,7 +134,7 @@ export default {
                     lineItems.supportingItems
                 );
             }
-            if (lineItems.supportingItems.vaps) {
+            if (lineItems.vaps) {
                 amountDue += this.getTotalPriceOfAllLineItemsAndChildParts(lineItems.vaps);
             }
             return amountDue;