diff --git a/src/fmg-components/cart/cart.vue b/src/fmg-components/cart/cart.vue
index b7c06bdc5..2d268e81a 100644
--- a/src/fmg-components/cart/cart.vue
+++ b/src/fmg-components/cart/cart.vue
@@ -784,9 +784,9 @@ export default {
         },
     },
     watch: {
-        lineItems: {
-            handler() {
-                this.$emit("update:modelValue", this.lineItems);
+        modelValue: {
+            handler(newValue) {
+                this.lineItems = deepClone(newValue);
             },
             deep: true,
         },