diff --git a/Documentation.html b/Documentation.html
index b1cf90cfb..f7eb4bf09 100755
--- a/Documentation.html
+++ b/Documentation.html
@@ -635,8 +635,7 @@ $cfg['PmaAbsoluteUri'] = (!empty($_SERVER['HTTPS']) ? 'https' : 'http') . '://'
                 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`master_field` varchar(64) NOT NULL default '',<br />
                 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`foreign_table` varchar(64) NOT NULL default '',<br />
                 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`foreign_field` varchar(64) NOT NULL default '',<br />
-                &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;PRIMARY KEY  (`master_table`,`master_field`),<br />
-                &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;KEY pdf_page_number (`pdf_page_number`)<br />
+                &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;PRIMARY KEY  (`master_table`,`master_field`)<br />
                 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;) TYPE=MyISAM COMMENT='Relation table';<br />
                 </tt>
             </li>