diff --git a/ChangeLog b/ChangeLog
index 310f332074..ffbc76afc7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -34,6 +34,7 @@ phpMyAdmin - ChangeLog
 - bug #4493 s_attention.png is missing
 - bug #4499 Uncaught TypeError: Cannot call method 'substr' of undefined
 - bug #4498 PMA 4.2.x and HHVM
+- bug #4500 mysql_doc_template is not defined
 
 4.2.6.0 (2014-07-17)
 - bug #4471 Undefined index warning with referenced column.
diff --git a/js/functions.js b/js/functions.js
index 7b8afbad59..8dd9473de8 100644
--- a/js/functions.js
+++ b/js/functions.js
@@ -1624,6 +1624,10 @@ function catchKeypressesFromSqlTextboxes(event) {
  */
 function PMA_doc_add($elm, params)
 {
+    if (typeof mysql_doc_template == 'undefined') {
+        return;
+    }
+
     var url = $.sprintf(
         mysql_doc_template,
         params[0]