diff --git a/site/public/order/dot-compliance/index.html b/site/public/order/dot-compliance/index.html
index 22b2f13..12682e3 100644
--- a/site/public/order/dot-compliance/index.html
+++ b/site/public/order/dot-compliance/index.html
@@ -455,10 +455,12 @@ function fetchDiscount() {
     updateTotal();
   }).catch(function() { activeDiscount = null; updateTotal(); });
 }
-// Fetch on load if promo pre-filled
-if (promoFromUrl) { setTimeout(fetchDiscount, 500); }
-// Fetch on blur of promo field
-document.getElementById("pw-promo").addEventListener("blur", fetchDiscount);
+// Fetch on load if promo field has any value
+var promoField = document.getElementById("pw-promo");
+if (promoField.value.trim()) { setTimeout(fetchDiscount, 300); }
+// Fetch on blur and input of promo field
+promoField.addEventListener("blur", fetchDiscount);
+promoField.addEventListener("input", function() { clearTimeout(promoField._debounce); promoField._debounce = setTimeout(fetchDiscount, 600); });
 
 function updateTotal() {
   var selected = [];