diff --git a/kfet/static/kfet/js/kpsul.js b/kfet/static/kfet/js/kpsul.js
index b6c7e4a6..6052ad56 100644
--- a/kfet/static/kfet/js/kpsul.js
+++ b/kfet/static/kfet/js/kpsul.js
@@ -344,11 +344,10 @@ class CheckoutSelection {
 
         this._init_events();
 
-        this.choices = [
-            for (option of this._$input.find('option'))
-                if ($(option).attr('value') != '')
-                    parseInt($(option).attr('value'))
-        ];
+        this.choices = this._$input.find('option[value!=""]').toArray()
+            .map(function(opt) {
+                return parseInt($(opt).attr('value'));
+            });
     }
 
     _init_events() {