diff --git a/templates/admin/static/js/energy.js b/templates/admin/static/js/energy.js
index f36920f..b80e04f 100644
--- a/templates/admin/static/js/energy.js
+++ b/templates/admin/static/js/energy.js
@@ -194,7 +194,7 @@
 
     function escapeHtml(text) {
         if (!text) return '';
-        return text.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
+        return text.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#039;');
     }
 
     function showMsg(msgEl, text, type) {