diff --git a/page_title.js b/page_title.js
index 37a86ac..8d96ee4 100644
--- a/page_title.js
+++ b/page_title.js
@@ -16,7 +16,7 @@ Drupal.behaviors.pageTitleFieldsetSummaries = {
 
 Drupal.behaviors.pageTitleCounter = {
   attach : function(context) {
-    $('fieldset#edit-page-title', context).each(function() {
+    $('fieldset#edit-page-title', context).once('page-title', function() {
       function getLength(element) { return $(element).val().length; }
 
       var wrapper = this;