diff --git a/htdocs/comm/propal/class/propal.class.php b/htdocs/comm/propal/class/propal.class.php
index 36162e8b9aa..25b04c7c1e2 100644
--- a/htdocs/comm/propal/class/propal.class.php
+++ b/htdocs/comm/propal/class/propal.class.php
@@ -1615,11 +1615,14 @@ class Propal extends CommonObject
 	/**
 	 * Load array lines
 	 *
-	 * @param		int		$only_product	Return only physical products
+	 *	@param		int		$only_product	Return only physical products
+	 *	@param		int		$loadalsotranslation	Return translation for products
+	 *
 	 * @return		int						<0 if KO, >0 if OK
 	 */
-    public function fetch_lines($only_product = 0)
+	public function fetch_lines($only_product = 0, $loadalsotranslation = 0)
 	{
+		global $langs, $conf;
         // phpcs:enable
 		$this->lines=array();
 
@@ -1712,6 +1715,13 @@ class Propal extends CommonObject
 				$line->multicurrency_total_ttc 	= $objp->multicurrency_total_ttc;
 
 				$line->fetch_optionals();
+				
+				// multilangs
+        		if (! empty($conf->global->MAIN_MULTILANGS) && ! empty($objp->fk_product) && ! empty($loadalsotranslation)) {
+        		$line = new Product($this->db);
+        		$line->fetch($objp->fk_product);
+        		$line->getMultiLangs();
+        		}
 
 				$this->lines[$i]        = $line;
 				//dol_syslog("1 ".$line->fk_product);
diff --git a/htdocs/commande/class/commande.class.php b/htdocs/commande/class/commande.class.php
index 4eb3b3236e0..8469dc0cd1f 100644
--- a/htdocs/commande/class/commande.class.php
+++ b/htdocs/commande/class/commande.class.php
@@ -1888,10 +1888,12 @@ class Commande extends CommonOrder
 	 *	Load array lines
 	 *
 	 *	@param		int		$only_product	Return only physical products
+	 *	@param		int		$loadalsotranslation	Return translation for products
 	 *	@return		int						<0 if KO, >0 if OK
 	 */
-	public function fetch_lines($only_product = 0)
+	public function fetch_lines($only_product = 0, $loadalsotranslation = 0)
 	{
+		global $langs, $conf;
         // phpcs:enable
 		$this->lines=array();
 
@@ -1983,6 +1985,13 @@ class Commande extends CommonOrder
 				$line->multicurrency_total_ttc 	= $objp->multicurrency_total_ttc;
 
 				$line->fetch_optionals();
+				
+				// multilangs
+        		if (! empty($conf->global->MAIN_MULTILANGS) && ! empty($objp->fk_product) && ! empty($loadalsotranslation)) {
+        		$line = new Product($this->db);
+        		$line->fetch($objp->fk_product);
+        		$line->getMultiLangs();
+        		}
 
                 $this->lines[$i] = $line;
 
diff --git a/htdocs/compta/facture/class/facture.class.php b/htdocs/compta/facture/class/facture.class.php
index f249443ac66..a502b885ab3 100644
--- a/htdocs/compta/facture/class/facture.class.php
+++ b/htdocs/compta/facture/class/facture.class.php
@@ -1467,10 +1467,14 @@ class Facture extends CommonInvoice
 	/**
 	 *	Load all detailed lines into this->lines
 	 *
+	 *	@param		int		$only_product	Return only physical products
+	 *	@param		int		$loadalsotranslation	Return translation for products
+	 *
 	 *	@return     int         1 if OK, < 0 if KO
 	 */
-    public function fetch_lines()
+	public function fetch_lines($only_product = 0, $loadalsotranslation = 0)
 	{
+		global $langs, $conf;
         // phpcs:enable
 		$this->lines=array();
 
@@ -1559,6 +1563,13 @@ class Facture extends CommonInvoice
 				$line->multicurrency_total_ttc 	= $objp->multicurrency_total_ttc;
 
                 $line->fetch_optionals();
+				
+				// multilangs
+        		if (! empty($conf->global->MAIN_MULTILANGS) && ! empty($objp->fk_product) && ! empty($loadalsotranslation)) {
+        		$line = new Product($this->db);
+        		$line->fetch($objp->fk_product);
+        		$line->getMultiLangs();
+        		}
 
 				$this->lines[$i] = $line;
 
diff --git a/htdocs/contrat/class/contrat.class.php b/htdocs/contrat/class/contrat.class.php
index 91a373743c4..e16187412a0 100644
--- a/htdocs/contrat/class/contrat.class.php
+++ b/htdocs/contrat/class/contrat.class.php
@@ -716,10 +716,14 @@ class Contrat extends CommonObject
 	 *  Load lines array into this->lines.
 	 *  This set also nbofserviceswait, nbofservicesopened, nbofservicesexpired and nbofservicesclosed
 	 *
+	 *	@param		int		$only_product	Return only physical products
+	 *	@param		int		$loadalsotranslation	Return translation for products
+	 *
 	 *  @return ContratLigne[]   Return array of contract lines
 	 */
-	public function fetch_lines()
+	public function fetch_lines($only_product = 0, $loadalsotranslation = 0)
 	{
+		global $langs, $conf;
         // phpcs:enable
 		$this->nbofserviceswait=0;
 		$this->nbofservicesopened=0;
@@ -828,6 +832,13 @@ class Contrat extends CommonObject
 				// Retreive all extrafields for contract
 				// fetch optionals attributes and labels
 				$line->fetch_optionals();
+				
+				// multilangs
+        		if (! empty($conf->global->MAIN_MULTILANGS) && ! empty($objp->fk_product) && ! empty($loadalsotranslation)) {
+        		$line = new Product($this->db);
+        		$line->fetch($objp->fk_product);
+        		$line->getMultiLangs();
+        		}
 
 				$this->lines[$pos] = $line;
 				$this->lines_id_index_mapper[$line->id] = $pos;