diff --git a/share/static/js/event-registration.js b/share/static/js/event-registration.js
index 03ba528926a..217ccaa0e08 100644
--- a/share/static/js/event-registration.js
+++ b/share/static/js/event-registration.js
@@ -94,6 +94,8 @@ jQuery(function() {
                 var vals;
                 if ( jQuery(this).is('select') ) {
                     vals = based_on.first().val();
+                } else if (jQuery(this).is('input[type="text"]')) {
+                    vals = based_on.val();
                 }
                 else {
                     vals = [];