diff --git a/htdocs/compta/facture.php b/htdocs/compta/facture.php
index 9ca28ef8430..4ed261945ba 100644
--- a/htdocs/compta/facture.php
+++ b/htdocs/compta/facture.php
@@ -340,7 +340,7 @@ if ($action == 'confirm_valid' && $confirm == 'yes' && $user->rights->facture->v
 }
 
 // Repasse la facture en mode brouillon (unvalidate)
-if ($action == 'modif' && $user->rights->facture->unvalidate)
+if ($action == 'modif' && ((empty($conf->global->MAIN_USE_ADVANCED_PERMS) && $user->rights->facture->valider) || $user->rights->facture->invoice_advance->unvalidate))
 {
     $object->fetch($id);
     $object->fetch_thirdparty();
@@ -2580,7 +2580,7 @@ else
                         {
                             if (! $objectidnext)
                             {
-                                if ($user->rights->facture->unvalidate)
+                                if ((empty($conf->global->MAIN_USE_ADVANCED_PERMS) && $user->rights->facture->valider) || $user->rights->facture->invoice_advance->unvalidate)
                                 {
                                     print '<a class="butAction" href="'.$_SERVER['PHP_SELF'].'?facid='.$object->id.'&amp;action=modif">'.$langs->trans('Modify').'</a>';
                                 }
diff --git a/htdocs/includes/modules/modFacture.class.php b/htdocs/includes/modules/modFacture.class.php
index 0281fcfc4f4..51c17d203df 100644
--- a/htdocs/includes/modules/modFacture.class.php
+++ b/htdocs/includes/modules/modFacture.class.php
@@ -131,7 +131,8 @@ class modFacture extends DolibarrModules
 		$this->rights[$r][1] = 'Dévalider les factures';
 		$this->rights[$r][2] = 'a';
 		$this->rights[$r][3] = 0;
-		$this->rights[$r][4] = 'unvalidate';
+        $this->rights[$r][4] = 'invoice_advance';
+		$this->rights[$r][5] = 'unvalidate';
 
 		$r++;
 		$this->rights[$r][0] = 14;