diff --git a/js/functions.js b/js/functions.js
index a970a81584..bcdead8e17 100644
--- a/js/functions.js
+++ b/js/functions.js
@@ -2692,7 +2692,7 @@ AJAX.registerOnload('functions.js', function () {
         } else {
             title = PMA_messages.enum_columnVals.replace(
                 /%s/,
-                '"' + decodeURIComponent(colname) + '"'
+                '"' + escapeHtml(decodeURIComponent(colname)) + '"'
             );
         }
         // Get the values as a string