diff --git a/htdocs/core/modules/modReceiptPrinter.class.php b/htdocs/core/modules/modReceiptPrinter.class.php
index 50c93f07220..49a12b5942c 100644
--- a/htdocs/core/modules/modReceiptPrinter.class.php
+++ b/htdocs/core/modules/modReceiptPrinter.class.php
@@ -138,8 +138,8 @@ class modReceiptPrinter extends DolibarrModules
         // Clean before activation
         $this->remove($options);
         $sql = array(
-            "CREATE TABLE IF NOT EXISTS llx_printer_receipt (rowid integer AUTO_INCREMENT PRIMARY KEY, name varchar(128), fk_type integer, fk_profile integer, parameter varchar(128), entity integer) ENGINE=innodb;",
-            "CREATE TABLE IF NOT EXISTS llx_printer_receipt_template (rowid integer AUTO_INCREMENT PRIMARY KEY, name varchar(128), template text, entity integer) ENGINE=innodb;",
+            "CREATE TABLE IF NOT EXISTS ".MAIN_DB_PREFIX."printer_receipt (rowid integer AUTO_INCREMENT PRIMARY KEY, name varchar(128), fk_type integer, fk_profile integer, parameter varchar(128), entity integer) ENGINE=innodb;",
+            "CREATE TABLE IF NOT EXISTS ".MAIN_DB_PREFIX."printer_receipt_template (rowid integer AUTO_INCREMENT PRIMARY KEY, name varchar(128), template text, entity integer) ENGINE=innodb;",
             );
         return $this->_init($sql,$options);
     }
diff --git a/htdocs/core/modules/modStock.class.php b/htdocs/core/modules/modStock.class.php
index 1c0393b3653..5e358c68841 100644
--- a/htdocs/core/modules/modStock.class.php
+++ b/htdocs/core/modules/modStock.class.php
@@ -274,7 +274,7 @@ class modStock extends DolibarrModules
 		    'ps.fk_product'=>"PREF123456",'ps.fk_entrepot'=>"ALM001",'ps.reel'=>"10"
 		);
 		$this->import_run_sql_after_array[$r]=array(    // Because we may change data that are denormalized, we must update dernormalized data after.
-		    'UPDATE llx_product p SET p.stock= (SELECT SUM(ps.reel) FROM llx_product_stock ps WHERE ps.fk_product = p.rowid);'
+		    'UPDATE '.MAIN_DB_PREFIX.'product p SET p.stock= (SELECT SUM(ps.reel) FROM '.MAIN_DB_PREFIX.'product_stock ps WHERE ps.fk_product = p.rowid);'
 		);
 
 	}
diff --git a/htdocs/install/repair.php b/htdocs/install/repair.php
index 229ae0a3c3e..2e4847e2a97 100644
--- a/htdocs/install/repair.php
+++ b/htdocs/install/repair.php
@@ -774,7 +774,7 @@ if ($ok && GETPOST('clean_product_stock_batch','alpha'))
                             if ($resql2)
                             {
                                 // We update product_stock, so we must field stock into product too.
-                                $sql3='UPDATE llx_product p SET p.stock= (SELECT SUM(ps.reel) FROM llx_product_stock ps WHERE ps.fk_product = p.rowid)';
+                                $sql3='UPDATE '.MAIN_DB_PREFIX.'product p SET p.stock= (SELECT SUM(ps.reel) FROM '.MAIN_DB_PREFIX.'product_stock ps WHERE ps.fk_product = p.rowid)';
                                 $resql3=$db->query($sql3);
                                 if (! $resql3)
                                 {
diff --git a/htdocs/install/upgrade2.php b/htdocs/install/upgrade2.php
index be31b1f6452..1c87d333795 100644
--- a/htdocs/install/upgrade2.php
+++ b/htdocs/install/upgrade2.php
@@ -660,8 +660,8 @@ function migrate_paiements_orphelins_1($db,$langs,$conf)
         $sql = "SELECT distinct p.rowid, p.datec, p.amount as pamount, bu.fk_bank, b.amount as bamount,";
         $sql.= " bu2.url_id as socid";
         $sql.= " FROM (".MAIN_DB_PREFIX."paiement as p, ".MAIN_DB_PREFIX."bank_url as bu, ".MAIN_DB_PREFIX."bank as b)";
-        $sql.= " LEFT JOIN llx_paiement_facture as pf ON pf.fk_paiement = p.rowid";
-        $sql.= " LEFT JOIN llx_bank_url as bu2 ON (bu.fk_bank=bu2.fk_bank AND bu2.type = 'company')";
+        $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."paiement_facture as pf ON pf.fk_paiement = p.rowid";
+        $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."bank_url as bu2 ON (bu.fk_bank=bu2.fk_bank AND bu2.type = 'company')";
         $sql.= " WHERE pf.rowid IS NULL AND (p.rowid=bu.url_id AND bu.type='payment') AND bu.fk_bank = b.rowid";
         $sql.= " AND b.rappro = 1";
         $sql.= " AND (p.fk_facture = 0 OR p.fk_facture IS NULL)";
@@ -787,8 +787,8 @@ function migrate_paiements_orphelins_2($db,$langs,$conf)
         $sql = "SELECT distinct p.rowid, p.datec, p.amount as pamount, bu.fk_bank, b.amount as bamount,";
         $sql.= " bu2.url_id as socid";
         $sql.= " FROM (".MAIN_DB_PREFIX."paiement as p, ".MAIN_DB_PREFIX."bank_url as bu, ".MAIN_DB_PREFIX."bank as b)";
-        $sql.= " LEFT JOIN llx_paiement_facture as pf ON pf.fk_paiement = p.rowid";
-        $sql.= " LEFT JOIN llx_bank_url as bu2 ON (bu.fk_bank = bu2.fk_bank AND bu2.type = 'company')";
+        $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."paiement_facture as pf ON pf.fk_paiement = p.rowid";
+        $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."bank_url as bu2 ON (bu.fk_bank = bu2.fk_bank AND bu2.type = 'company')";
         $sql.= " WHERE pf.rowid IS NULL AND (p.fk_bank = bu.fk_bank AND bu.type = 'payment') AND bu.fk_bank = b.rowid";
         $sql.= " AND (p.fk_facture = 0 OR p.fk_facture IS NULL)";
 
@@ -1104,7 +1104,7 @@ function migrate_contracts_date1($db,$langs,$conf)
     print '<br>';
     print '<b>'.$langs->trans('MigrationContractsEmptyDatesUpdate')."</b><br>\n";
 
-    $sql="update llx_contrat set date_contrat=tms where date_contrat is null";
+    $sql="update ".MAIN_DB_PREFIX."contrat set date_contrat=tms where date_contrat is null";
     dolibarr_install_syslog("upgrade2::migrate_contracts_date1");
     $resql = $db->query($sql);
     if (! $resql) dol_print_error($db);
@@ -1113,7 +1113,7 @@ function migrate_contracts_date1($db,$langs,$conf)
     else
     print $langs->trans('MigrationContractsEmptyDatesNothingToUpdate')."<br>\n";
 
-    $sql="update llx_contrat set datec=tms where datec is null";
+    $sql="update ".MAIN_DB_PREFIX."contrat set datec=tms where datec is null";
     dolibarr_install_syslog("upgrade2::migrate_contracts_date1");
     $resql = $db->query($sql);
     if (! $resql) dol_print_error($db);
@@ -1204,7 +1204,7 @@ function migrate_contracts_date3($db,$langs,$conf)
     print '<br>';
     print '<b>'.$langs->trans('MigrationContractsIncoherentCreationDateUpdate')."</b><br>\n";
 
-    $sql="update llx_contrat set datec=date_contrat where datec is null or datec > date_contrat";
+    $sql="update ".MAIN_DB_PREFIX."contrat set datec=date_contrat where datec is null or datec > date_contrat";
     dolibarr_install_syslog("upgrade2::migrate_contracts_date3");
     $resql = $db->query($sql);
     if (! $resql) dol_print_error($db);
@@ -1231,7 +1231,7 @@ function migrate_contracts_open($db,$langs,$conf)
     print '<br>';
     print '<b>'.$langs->trans('MigrationReopeningContracts')."</b><br>\n";
 
-    $sql = "SELECT c.rowid as cref FROM llx_contrat as c, llx_contratdet as cd";
+    $sql = "SELECT c.rowid as cref FROM ".MAIN_DB_PREFIX."contrat as c, ".MAIN_DB_PREFIX."contratdet as cd";
     $sql.= " WHERE cd.statut = 4 AND c.statut=2 AND c.rowid=cd.fk_contrat";
     dolibarr_install_syslog("upgrade2::migrate_contracts_open");
     $resql = $db->query($sql);
@@ -1964,7 +1964,7 @@ function migrate_modeles($db,$langs,$conf)
         if (count($modellist)==0)
         {
             // Aucun model par defaut.
-            $sql=" insert into llx_document_model(nom,type) values('crabe','invoice')";
+            $sql=" insert into ".MAIN_DB_PREFIX."document_model(nom,type) values('crabe','invoice')";
             $resql = $db->query($sql);
             if (! $resql) dol_print_error($db);
         }
@@ -1977,7 +1977,7 @@ function migrate_modeles($db,$langs,$conf)
         if (count($modellist)==0)
         {
             // Aucun model par defaut.
-            $sql=" insert into llx_document_model(nom,type) values('einstein','order')";
+            $sql=" insert into ".MAIN_DB_PREFIX."document_model(nom,type) values('einstein','order')";
             $resql = $db->query($sql);
             if (! $resql) dol_print_error($db);
         }
@@ -1990,7 +1990,7 @@ function migrate_modeles($db,$langs,$conf)
         if (count($modellist)==0)
         {
             // Aucun model par defaut.
-            $sql=" insert into llx_document_model(nom,type) values('rouget','shipping')";
+            $sql=" insert into ".MAIN_DB_PREFIX."document_model(nom,type) values('rouget','shipping')";
             $resql = $db->query($sql);
             if (! $resql) dol_print_error($db);
         }
diff --git a/htdocs/website/class/website.class.php b/htdocs/website/class/website.class.php
index 432851b4bd4..bfd6a0dcb9e 100644
--- a/htdocs/website/class/website.class.php
+++ b/htdocs/website/class/website.class.php
@@ -850,7 +850,7 @@ class Website extends CommonObject
 		}
 		foreach($listofpages as $pageid => $objectpageold)
 		{
-			$line = 'INSERT INTO llx_website_page(rowid, fk_page, fk_website, pageurl, title, description, keyword, status, date_creation, tms, lang, import_key, grabbed_from, content)';
+			$line = 'INSERT INTO '.MAIN_DB_PREFIX.'website_page(rowid, fk_page, fk_website, pageurl, title, description, keyword, status, date_creation, tms, lang, import_key, grabbed_from, content)';
 			$line.= " VALUES(";
 			$line.= $objectpageold->newid."+__MAXROWID__, ";
 			$line.= ($objectpageold->newfk_page ? $this->db->escape($objectpageold->newfk_page)."+__MAXROWID__" : "null").", ";