diff --git a/uc_coupon.js b/uc_coupon.js
index 73253db..a8eaa7a 100644
--- a/uc_coupon.js
+++ b/uc_coupon.js
@@ -34,6 +34,14 @@ function getCoupon() {
       else if (window.render_line_items) {
         render_line_items();
       }
+      
+      if (window.quoteCallback) {
+        // Update shipping quotes (but only if they have already been calculated).
+        var formval = $('input[name=quote-form]').val();
+        if (typeof formval == 'string' && formval.length > 0) {
+          $("input[id*=quote-button]").click();
+        }
+      }
     }
   });
 }