diff --git a/htdocs/product/dynamic_price/class/price_expression.class.php b/htdocs/product/dynamic_price/class/price_expression.class.php
index 564c2448e58..255908726d4 100644
--- a/htdocs/product/dynamic_price/class/price_expression.class.php
+++ b/htdocs/product/dynamic_price/class/price_expression.class.php
@@ -88,7 +88,7 @@ class PriceExpression
 		}
 
 		// Insert request
-		$sql = "INSERT INTO ".MAIN_DB_PREFIX.$this->table_element." (";
+		$sql = "INSERT INTO ".$this->db->prefix().$this->table_element." (";
 		$sql .= "title, expression";
 		$sql .= ") VALUES (";
 		$sql .= " ".(isset($this->title) ? "'".$this->db->escape($this->title)."'" : "''").",";
@@ -104,7 +104,7 @@ class PriceExpression
 		}
 
 		if (!$error) {
-			$this->id = $this->db->last_insert_id(MAIN_DB_PREFIX.$this->table_element);
+			$this->id = $this->db->last_insert_id($this->db->prefix().$this->table_element);
 
 			//if (! $notrigger)
 			//{
@@ -148,7 +148,7 @@ class PriceExpression
 		}
 
 		$sql = "SELECT title, expression";
-		$sql .= " FROM ".MAIN_DB_PREFIX.$this->table_element;
+		$sql .= " FROM ".$this->db->prefix().$this->table_element;
 		$sql .= " WHERE rowid = ".((int) $id);
 
 		dol_syslog(__METHOD__);
@@ -179,7 +179,7 @@ class PriceExpression
 	{
 		// phpcs:enable
 		$sql = "SELECT rowid, title, expression";
-		$sql .= " FROM ".MAIN_DB_PREFIX.$this->table_element;
+		$sql .= " FROM ".$this->db->prefix().$this->table_element;
 		$sql .= " ORDER BY title";
 
 		dol_syslog(__METHOD__, LOG_DEBUG);
@@ -215,7 +215,7 @@ class PriceExpression
 	{
 		// phpcs:enable
 		$sql = "SELECT rowid";
-		$sql .= " FROM ".MAIN_DB_PREFIX.$this->table_element;
+		$sql .= " FROM ".$this->db->prefix().$this->table_element;
 		$sql .= " WHERE title = '".$this->db->escape($title)."'";
 
 		dol_syslog(__METHOD__, LOG_DEBUG);
@@ -254,7 +254,7 @@ class PriceExpression
 		}
 
 		// Update request
-		$sql = "UPDATE ".MAIN_DB_PREFIX.$this->table_element." SET";
+		$sql = "UPDATE ".$this->db->prefix().$this->table_element." SET";
 		$sql .= " title = ".(isset($this->title) ? "'".$this->db->escape($this->title)."'" : "''").",";
 		$sql .= " expression = ".(isset($this->expression) ? "'".$this->db->escape($this->expression)."'" : "''")."";
 		$sql .= " WHERE rowid = ".((int) $this->id);
@@ -326,7 +326,7 @@ class PriceExpression
 		//}
 
 		if (!$error) {
-			$sql = "DELETE FROM ".MAIN_DB_PREFIX.$this->table_element;
+			$sql = "DELETE FROM ".$this->db->prefix().$this->table_element;
 			$sql .= " WHERE rowid = ".((int) $rowid);
 
 			dol_syslog(__METHOD__);
diff --git a/htdocs/product/dynamic_price/class/price_global_variable.class.php b/htdocs/product/dynamic_price/class/price_global_variable.class.php
index a7b22f2ef13..336fb024470 100644
--- a/htdocs/product/dynamic_price/class/price_global_variable.class.php
+++ b/htdocs/product/dynamic_price/class/price_global_variable.class.php
@@ -88,7 +88,7 @@ class PriceGlobalVariable
 		$this->checkParameters();
 
 		// Insert request
-		$sql = "INSERT INTO ".MAIN_DB_PREFIX.$this->table_element." (";
+		$sql = "INSERT INTO ".$this->db->prefix().$this->table_element." (";
 		$sql .= "code, description, value";
 		$sql .= ") VALUES (";
 		$sql .= " ".(isset($this->code) ? "'".$this->db->escape($this->code)."'" : "''").",";
@@ -105,7 +105,7 @@ class PriceGlobalVariable
 		}
 
 		if (!$error) {
-			$this->id = $this->db->last_insert_id(MAIN_DB_PREFIX.$this->table_element);
+			$this->id = $this->db->last_insert_id($this->db->prefix().$this->table_element);
 
 			if (!$notrigger) {
 				// Uncomment this and change MYOBJECT to your own tag if you
@@ -142,7 +142,7 @@ class PriceGlobalVariable
 	public function fetch($id)
 	{
 		$sql = "SELECT code, description, value";
-		$sql .= " FROM ".MAIN_DB_PREFIX.$this->table_element;
+		$sql .= " FROM ".$this->db->prefix().$this->table_element;
 		$sql .= " WHERE rowid = ".((int) $id);
 
 		dol_syslog(__METHOD__);
@@ -179,7 +179,7 @@ class PriceGlobalVariable
 		$this->checkParameters();
 
 		// Update request
-		$sql = "UPDATE ".MAIN_DB_PREFIX.$this->table_element." SET";
+		$sql = "UPDATE ".$this->db->prefix().$this->table_element." SET";
 		$sql .= " code = ".(isset($this->code) ? "'".$this->db->escape($this->code)."'" : "''").",";
 		$sql .= " description = ".(isset($this->description) ? "'".$this->db->escape($this->description)."'" : "''").",";
 		$sql .= " value = ".((float) $this->value);
@@ -249,7 +249,7 @@ class PriceGlobalVariable
 		}
 
 		if (!$error) {
-			$sql = "DELETE FROM ".MAIN_DB_PREFIX.$this->table_element;
+			$sql = "DELETE FROM ".$this->db->prefix().$this->table_element;
 			$sql .= " WHERE rowid = ".((int) $rowid);
 
 			dol_syslog(__METHOD__);
@@ -316,7 +316,7 @@ class PriceGlobalVariable
 	public function listGlobalVariables()
 	{
 		$sql = "SELECT rowid, code, description, value";
-		$sql .= " FROM ".MAIN_DB_PREFIX.$this->table_element;
+		$sql .= " FROM ".$this->db->prefix().$this->table_element;
 		$sql .= " ORDER BY code";
 
 		dol_syslog(__METHOD__, LOG_DEBUG);
diff --git a/htdocs/product/dynamic_price/class/price_global_variable_updater.class.php b/htdocs/product/dynamic_price/class/price_global_variable_updater.class.php
index 8a9c1197a7f..317bc7fb5fd 100644
--- a/htdocs/product/dynamic_price/class/price_global_variable_updater.class.php
+++ b/htdocs/product/dynamic_price/class/price_global_variable_updater.class.php
@@ -100,7 +100,7 @@ class PriceGlobalVariableUpdater
 		$this->checkParameters();
 
 		// Insert request
-		$sql = "INSERT INTO ".MAIN_DB_PREFIX.$this->table_element." (";
+		$sql = "INSERT INTO ".$this->db->prefix().$this->table_element." (";
 		$sql .= "type, description, parameters, fk_variable, update_interval, next_update, last_status";
 		$sql .= ") VALUES (";
 		$sql .= " ".((int) $this->type).",";
@@ -121,7 +121,7 @@ class PriceGlobalVariableUpdater
 		}
 
 		if (!$error) {
-			$this->id = $this->db->last_insert_id(MAIN_DB_PREFIX.$this->table_element);
+			$this->id = $this->db->last_insert_id($this->db->prefix().$this->table_element);
 
 			if (!$notrigger) {
 				// Uncomment this and change MYOBJECT to your own tag if you
@@ -158,7 +158,7 @@ class PriceGlobalVariableUpdater
 	public function fetch($id)
 	{
 		$sql = "SELECT type, description, parameters, fk_variable, update_interval, next_update, last_status";
-		$sql .= " FROM ".MAIN_DB_PREFIX.$this->table_element;
+		$sql .= " FROM ".$this->db->prefix().$this->table_element;
 		$sql .= " WHERE rowid = ".((int) $id);
 
 		dol_syslog(__METHOD__);
@@ -199,7 +199,7 @@ class PriceGlobalVariableUpdater
 		$this->checkParameters();
 
 		// Update request
-		$sql = "UPDATE ".MAIN_DB_PREFIX.$this->table_element." SET";
+		$sql = "UPDATE ".$this->db->prefix().$this->table_element." SET";
 		$sql .= " type = ".((int) $this->type).",";
 		$sql .= " description = ".(isset($this->description) ? "'".$this->db->escape($this->description)."'" : "''").",";
 		$sql .= " parameters = ".(isset($this->parameters) ? "'".$this->db->escape($this->parameters)."'" : "''").",";
@@ -274,7 +274,7 @@ class PriceGlobalVariableUpdater
 		//}
 
 		if (!$error) {
-			$sql = "DELETE FROM ".MAIN_DB_PREFIX.$this->table_element;
+			$sql = "DELETE FROM ".$this->db->prefix().$this->table_element;
 			$sql .= " WHERE rowid = ".((int) $rowid);
 
 			dol_syslog(__METHOD__);
@@ -372,7 +372,7 @@ class PriceGlobalVariableUpdater
 	public function listUpdaters()
 	{
 		$sql = "SELECT rowid, type, description, parameters, fk_variable, update_interval, next_update, last_status";
-		$sql .= " FROM ".MAIN_DB_PREFIX.$this->table_element;
+		$sql .= " FROM ".$this->db->prefix().$this->table_element;
 
 		dol_syslog(__METHOD__, LOG_DEBUG);
 		$resql = $this->db->query($sql);
@@ -409,7 +409,7 @@ class PriceGlobalVariableUpdater
 	public function listPendingUpdaters()
 	{
 		$sql = "SELECT rowid, type, description, parameters, fk_variable, update_interval, next_update, last_status";
-		$sql .= " FROM ".MAIN_DB_PREFIX.$this->table_element;
+		$sql .= " FROM ".$this->db->prefix().$this->table_element;
 		$sql .= " WHERE next_update < ".dol_now();
 
 		dol_syslog(__METHOD__, LOG_DEBUG);
@@ -568,7 +568,7 @@ class PriceGlobalVariableUpdater
 		$this->checkParameters();
 
 		// Update request
-		$sql = "UPDATE ".MAIN_DB_PREFIX.$this->table_element." SET";
+		$sql = "UPDATE ".$this->db->prefix().$this->table_element." SET";
 		$sql .= " next_update = ".$this->next_update;
 		$sql .= " WHERE rowid = ".((int) $this->id);
 
@@ -612,7 +612,7 @@ class PriceGlobalVariableUpdater
 		$this->checkParameters();
 
 		// Update request
-		$sql = "UPDATE ".MAIN_DB_PREFIX.$this->table_element." SET";
+		$sql = "UPDATE ".$this->db->prefix().$this->table_element." SET";
 		$sql .= " last_status = ".(isset($this->last_status) ? "'".$this->db->escape($this->last_status)."'" : "''");
 		$sql .= " WHERE rowid = ".((int) $this->id);