diff --git a/htdocs/includes/modules/societe/modules_societe.class.php b/htdocs/includes/modules/societe/modules_societe.class.php
index 681729d3957..82798d7441b 100644
--- a/htdocs/includes/modules/societe/modules_societe.class.php
+++ b/htdocs/includes/modules/societe/modules_societe.class.php
@@ -125,6 +125,8 @@ class ModeleThirdPartyCode
 		if ($type == 0)  $s.=$langs->trans("CustomerCodeDesc").'<br>';
 		if ($type == 1)  $s.=$langs->trans("SupplierCodeDesc").'<br>';
 		if ($type != -1) $s.=$langs->trans("ValidityControledByModule").': <b>'.$this->getNom($langs).'</b><br>';
+		$s.='<br>';
+		$s.='<u>'.$langs->trans("ThisIsModuleRules").'</u>:<br>';
 		if ($type == 0)  $s.=$langs->trans("RequiredIfCustomer").': <b>'.yn(!$this->code_null).'</b><br>';
 		if ($type == 1)  $s.=$langs->trans("RequiredIfSupplier").': <b>'.yn(!$this->code_null).'</b><br>';
 		if ($type == -1) $s.=$langs->trans("Required").': <b>'.yn(!$this->code_null).'</b><br>';
diff --git a/htdocs/langs/en_US/companies.lang b/htdocs/langs/en_US/companies.lang
index 0b284d39933..2afc6b7ed4d 100644
--- a/htdocs/langs/en_US/companies.lang
+++ b/htdocs/langs/en_US/companies.lang
@@ -144,6 +144,7 @@ SupplierCodeDesc=Supplier code, unique for all suppliers
 RequiredIfCustomer=Required if third party is a customer or prospect
 RequiredIfSupplier=Required if third party is a supplier
 ValidityControledByModule=Validity controled by module
+ThisIsModuleRules=This is rules for this module
 LastProspect=Last
 ProspectToContact=Prospect to contact
 CompanyDeleted=Company "%s" deleted from database.
diff --git a/htdocs/langs/fr_FR/companies.lang b/htdocs/langs/fr_FR/companies.lang
index 48ad59484f5..cce5335fc48 100644
--- a/htdocs/langs/fr_FR/companies.lang
+++ b/htdocs/langs/fr_FR/companies.lang
@@ -144,6 +144,7 @@ SupplierCodeDesc=Code fournisseur unique pour chaque fournisseur
 RequiredIfCustomer=Requis si tiers est un client ou prospect
 RequiredIfSupplier=Requis si tiers est un fournisseur
 ValidityControledByModule=Validité controlée par le module
+ThisIsModuleRules=Voici les règles de ce module
 LastProspect=Dernier prospect
 ProspectToContact=Prospect à contacter
 CompanyDeleted=La société "%s" a été supprimée de la base.