diff --git a/install/upgrades/0.9.3.sql b/install/upgrades/0.9.3.sql
index f8292004..f77251ff 100644
--- a/install/upgrades/0.9.3.sql
+++ b/install/upgrades/0.9.3.sql
@@ -1,6 +1,6 @@
 -- add support for .it
-INSERT IGNORE INTO tld VALUES ('it', 1);
-INSERT IGNORE INTO tld VALUES ('ws', 1);
+INSERT IGNORE INTO `tld` VALUES ('it', 1);
+INSERT IGNORE INTO `tld` VALUES ('ws', 1);
 
 -- remove the old "estelle" default mx in older tables
 ALTER TABLE `domaines` MODIFY `mx` varchar(64) DEFAULT NULL;
@@ -10,16 +10,15 @@ ALTER TABLE `domaines_standby` MODIFY `mx` varchar(64) DEFAULT NULL;
 --
 -- if comment is null, then the variable is internal and will not show
 -- up in the generic configuration panel
-CREATE TABLE IF NOT EXISTS variable (
-  name varchar(48) NOT NULL default '',
-  value longtext NOT NULL,
-  comment mediumtext NULL,
-  PRIMARY KEY  (name),
-  KEY name (name)
+CREATE TABLE IF NOT EXISTS `variable` (
+  `name` varchar(48) NOT NULL default '',
+  `value` longtext NOT NULL,
+  `comment` mediumtext NULL,
+  PRIMARY KEY  (`name`)
 ) TYPE=MyISAM;
 
 -- hosting_tld: only used, for now, in bureau/admin/adm_*add.php
-INSERT IGNORE INTO `variable` (name, value, comment) VALUES ('hosting_tld', 0,
+INSERT IGNORE INTO `variable` (`name`, `value`, `comment`) VALUES ('hosting_tld', 0,
 'This is a FQDN that designates the main hostname of the service.
 
 For example, hosting_tld determines in what TLD the "free" user domain
diff --git a/install/upgrades/0.9.4.sql b/install/upgrades/0.9.4.sql
index 293a894e..856a12ab 100644
--- a/install/upgrades/0.9.4.sql
+++ b/install/upgrades/0.9.4.sql
@@ -1,8 +1,8 @@
 -- Ajout du champ 'type' pour les membres
-ALTER TABLE membres ADD COLUMN type varchar(128) default 'default' AFTER admlist;
+ALTER TABLE `membres` ADD COLUMN `type` varchar(128) default 'default' AFTER `admlist`;
 
 -- Ajout du champ 'type' pour les quotas par défaut
-ALTER TABLE defquotas ADD COLUMN type varchar(128) default 'default' AFTER value;
+ALTER TABLE `defquotas` ADD COLUMN `type` varchar(128) default 'default' AFTER `value`;
 
 -- we don't store cleartext passwords anymore, we use saslauthd
 ALTER TABLE `mail_users` DROP `sasl`;
diff --git a/install/upgrades/0.9.5.sql b/install/upgrades/0.9.5.sql
index b2093b1e..b7627550 100644
--- a/install/upgrades/0.9.5.sql
+++ b/install/upgrades/0.9.5.sql
@@ -1,11 +1,11 @@
 -- Pour les durées de comptes
-ALTER IGNORE TABLE membres ADD COLUMN created datetime default NULL AFTER type;
-ALTER IGNORE TABLE membres ADD COLUMN renewed datetime default NULL AFTER created;
-ALTER IGNORE TABLE membres ADD COLUMN duration int(4) default NULL AFTER renewed;
+ALTER IGNORE TABLE `membres` ADD COLUMN `created` datetime default NULL AFTER `type`;
+ALTER IGNORE TABLE `membres` ADD COLUMN `renewed` datetime default NULL AFTER `created`;
+ALTER IGNORE TABLE `membres` ADD COLUMN `duration` int(4) default NULL AFTER `renewed`;
 
 -- Pour l'encryptage des mots de passe ftp
-ALTER IGNORE TABLE ftpusers ADD COLUMN encrypted_password VARCHAR(32) default NULL AFTER password;
-UPDATE ftpusers SET encrypted_password=ENCRYPT(password) WHERE password!='';
+ALTER IGNORE TABLE `ftpusers` ADD COLUMN `encrypted_password` VARCHAR(32) default NULL AFTER `password`;
+UPDATE `ftpusers` SET `encrypted_password`=ENCRYPT(`password`) WHERE `password`!='';
 
 -- --------------------------------------------------------
 -- TABLES de mémorisation de la taille des dossiers web/mail/db
diff --git a/install/upgrades/0.9.6.sql b/install/upgrades/0.9.6.sql
index e9adf08d..707e0e1f 100644
--- a/install/upgrades/0.9.6.sql
+++ b/install/upgrades/0.9.6.sql
@@ -6,4 +6,4 @@ PRIMARY KEY ( `login` )
 ) COMMENT = 'Allowed account for secondary mx managment';
 
 # On met les quota par defaut du nombre d'utilisateurs mysql
-INSERT IGNORE INTO defquotas (quota,value) VALUES ('mysql_users',1);
+INSERT IGNORE INTO defquotas (`quota`,`value`) VALUES ('mysql_users',1);