diff --git a/reference/yaf/yaf-loader.xml b/reference/yaf/yaf-loader.xml
index 6be6a11b55..778b61009c 100644
--- a/reference/yaf/yaf-loader.xml
+++ b/reference/yaf/yaf-loader.xml
@@ -179,6 +179,12 @@ class A_B_TestModel =>
     </programlisting>
   </example>
 
+  <note>
+   <para>
+    As of 2.1.18, Yaf supports Controller autoloading, but autoloader only try to locate controller
+    class script under the default module folders, which is APPLICATION_PATH/controllers.
+   </para>
+  </note>
    also, the directory will be affected by <link linkend="ini.yaf.lowcase-path">yaf.lowcase_path</link>.
   </para>
   </section>