diff --git a/reference/filesystem/functions/ftell.xml b/reference/filesystem/functions/ftell.xml
index 97471b9a3d..5495491653 100644
--- a/reference/filesystem/functions/ftell.xml
+++ b/reference/filesystem/functions/ftell.xml
@@ -45,6 +45,7 @@
   <para>
    If an error occurs, returns &false;.
   </para>
+  &fs.file.32bit;
  </refsect1>
 
  <refsect1 role="examples">