diff --git a/reference/filesystem/functions/pathinfo.xml b/reference/filesystem/functions/pathinfo.xml
index 3cfc4fb4d3..97733ab6ea 100644
--- a/reference/filesystem/functions/pathinfo.xml
+++ b/reference/filesystem/functions/pathinfo.xml
@@ -125,6 +125,13 @@ lib.inc
     predefined reserved variables</link>.
    </para>
   </note>
+  <note>
+   <para>
+    <function>pathinfo</function> is locale aware, so for it to parse the path 
+    correctly with multibyte character, the matching locale must be set using 
+    the <function>setlocale</function> function.
+   </para>
+  </note>
  </refsect1>
  
  <refsect1 role="seealso">