diff --git a/user_guide/libraries/file_uploading.html b/user_guide/libraries/file_uploading.html
index 7fabb09..071ad1f 100644
--- a/user_guide/libraries/file_uploading.html
+++ b/user_guide/libraries/file_uploading.html
@@ -323,11 +323,17 @@
<h2>$this->upload->do_upload()</h2>
-<p>Performs the upload based on the preferences you've set. Note: The upload routine expects the file to come from a form field
+<p>Performs the upload based on the preferences you've set. Note: By default the upload routine expects the file to come from a form field
called <dfn>userfile</dfn>, and the form must be a "multipart type:</p>
<code><form method="post" action="some_action" enctype="multipart/form-data" /></code>
+<p>If you would like to set your own field name simply pass its value to the <dfn>do_upload</dfn> function:</p>
+
+<code>
+$field_name = "some_field_name";<br />
+$this->upload->do_upload($field_name)</code>
+
<h2>$this->upload->display_errors()</h2>