diff --git a/ChangeLog b/ChangeLog
index 85350612d..94bddee38 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -32,6 +32,7 @@ $HeadURL: https://phpmyadmin.svn.sourceforge.net/svnroot/phpmyadmin/trunk/phpMyA
 - patch #2520747 [core] E_DEPRECATED compatibility for PHP 5.3,
   thanks to Giovanni Giacobbi - themnemonic
 - bug [display] Message "Bookmark created" is not displaying
++ [display] Show AUTO_INCREMENT instead of A_I when in vertical mode
 
 3.1.2.0 (2009-01-19)
 - bug #1253252 [display] Can't NULL a column with relation defined 
diff --git a/libraries/tbl_properties.inc.php b/libraries/tbl_properties.inc.php
index 8975dc492..849cddfc3 100644
--- a/libraries/tbl_properties.inc.php
+++ b/libraries/tbl_properties.inc.php
@@ -114,7 +114,7 @@ if (!$is_backup) {
     $header_cells[] = $strIndex;
 }
 
-$header_cells[] = '<abbr title="AUTO_INCREMENT">A_I</abbr>';
+$header_cells[] = '<abbr title="AUTO_INCREMENT">' . ($display_type == 'horizontal' ? 'A_I' : 'AUTO_INCREMENT') . '</abbr>';
 
 require_once './libraries/relation.lib.php';
 require_once './libraries/transformations.lib.php';