diff --git a/upgrade.txt b/upgrade.txt
index dbbbbcf..9891ac9 100644
--- a/upgrade.txt
+++ b/upgrade.txt
@@ -1,26 +1,24 @@
-
-
-======================================================================
-=== From SemanticScuttle 0.88 to 0.89
-======================================================================
-
-==== Backup
-Backup your database. Make a copy from your SemanticScuttle directory.
-
-==== In your database, add the following table (modify the table name if necessary):
-
-CREATE TABLE `sc_searchhistory` (
-  `shId` int(11) NOT NULL auto_increment,
-  `shTerms` varchar(255) NOT NULL default '',
-  `shRange` varchar(32) NOT NULL default '',
-  `shDatetime` datetime NOT NULL default '0000-00-00 00:00:00',
-  `shNbResults` int(6) NOT NULL default '0',
-  `uId` int(11) NOT NULL default '0',
-  PRIMARY KEY (`shId`)
-);
-
-=== In your configuration file (config.inc.php), add manually at the end of the file (for help, compare with last version of config.inc.php.example)
-
-$sizeSearchHistory = 10;
+==== UPGRADE instructions ====
+
+=== From version 0.88 to 0.89 ===
+- Backup you database
+- Make a copy from your SemanticScuttle Web directory
+- Upgrade your database : add the following table (adapt its name prefix to your convenience) executin the following SQL commands:
+
+	CREATE TABLE `sc_searchhistory` (
+	  `shId` int(11) NOT NULL auto_increment,
+  	`shTerms` varchar(255) NOT NULL default '',
+	  `shRange` varchar(32) NOT NULL default '',
+	  `shDatetime` datetime NOT NULL default '0000-00-00 00:00:00',
+	  `shNbResults` int(6) NOT NULL default '0',
+	  `uId` int(11) NOT NULL default '0',
+	  PRIMARY KEY (`shId`)
+	);
+
+- Upgrade your current configuration file (config.inc.php) with respect to config.inc.php.example
+  - add line:
+	$sizeSearchHistory = 10;
+  - add sidebar block index line:
+	$index_sidebar_blocks = array('search','users','linked','recent');