diff --git a/misc/states.js b/misc/states.js
index 6d98da8..46ee024 100644
--- a/misc/states.js
+++ b/misc/states.js
@@ -493,7 +493,10 @@ $(document).bind('state:disabled', function(e) {
 $(document).bind('state:required', function(e) {
   if (e.trigger) {
     if (e.value) {
-      $(e.target).closest('.form-item, .form-wrapper').find('label').append('<span class="form-required">*</span>');
+      // Avoids duplicate required markers on initialization.
+      if (!$(e.target).closest('.form-item, .form-wrapper').find('label .form-required').length) {
+        $(e.target).closest('.form-item, .form-wrapper').find('label').append('<span class="form-required">*</span>');
+      }
     }
     else {
       $(e.target).closest('.form-item, .form-wrapper').find('label .form-required').remove();