diff --git a/src/mixins/analytics-mixin.js b/src/mixins/analytics-mixin.js
index 93af6e1d4..e0d865c35 100644
--- a/src/mixins/analytics-mixin.js
+++ b/src/mixins/analytics-mixin.js
@@ -133,8 +133,9 @@ export default {
             // assemble data for payload
             // // reduce promocode array
             const promos = order.lineItems.promos ?? [];
+            const promoCodes = promos.map((promo) => promo.promoCode);
             const promoString =
-                promos.length === 0 ? "" : promos.reduce((prev, next) => `${prev},${next}`);
+                promoCodes.length === 0 ? "" : promoCodes.reduce((prev, next) => `${prev},${next}`);
 
             // // reduce glass array
             const glassToReplace = order.damage.glassToReplace ?? [];