diff --git a/htdocs/comm/propal/class/propal.class.php b/htdocs/comm/propal/class/propal.class.php
index 348ca1938b0db0ef9c045cb1b9bef3f131a3e208..8b594d576313cec2b9dcad39b21210e3178533ff 100644
--- a/htdocs/comm/propal/class/propal.class.php
+++ b/htdocs/comm/propal/class/propal.class.php
@@ -187,7 +187,7 @@ class Propal extends CommonObject
 	/**
 	 * Billed or processed quote
 	 */
-	const STATUS_BILLED = 4;
+	const STATUS_BILLED = 4;   // Todo rename into STATUS_CLOSE ?
 
     /**
      *	Constructor
@@ -1301,7 +1301,7 @@ class Propal extends CommonObject
                 $this->note                 = $obj->note_private; // TODO deprecated
                 $this->note_private         = $obj->note_private;
                 $this->note_public          = $obj->note_public;
-                $this->statut               = $obj->fk_statut;
+                $this->statut               = (int) $obj->fk_statut;
                 $this->statut_libelle       = $obj->statut_label;
 
                 $this->datec                = $this->db->jdate($obj->datec); // TODO deprecated
diff --git a/htdocs/install/mysql/tables/llx_supplier_proposal.sql b/htdocs/install/mysql/tables/llx_supplier_proposal.sql
index 43f26ee0459eee695d398ee636817e4aff07adb2..13d9ba3a59a4408bfbb36d921512c79509dc55c3 100644
--- a/htdocs/install/mysql/tables/llx_supplier_proposal.sql
+++ b/htdocs/install/mysql/tables/llx_supplier_proposal.sql
@@ -18,7 +18,7 @@
 CREATE TABLE llx_supplier_proposal (
   rowid integer NOT NULL AUTO_INCREMENT PRIMARY KEY,
   ref varchar(30) NOT NULL,
-  entity integer NOT NULL DEFAULT '1',
+  entity integer NOT NULL DEFAULT 1,
   ref_ext varchar(255) DEFAULT NULL,
   ref_int varchar(255) DEFAULT NULL,
   fk_soc integer DEFAULT NULL,
@@ -31,11 +31,11 @@ CREATE TABLE llx_supplier_proposal (
   fk_user_modif integer DEFAULT NULL,
   fk_user_valid integer DEFAULT NULL,
   fk_user_cloture integer DEFAULT NULL,
-  fk_statut smallint NOT NULL DEFAULT '0',		-- 0=draft, 1=validated, 2=accepted, 3=refused, 4=closed
-  price double DEFAULT '0',
-  remise_percent double DEFAULT '0',
-  remise_absolue double DEFAULT '0',
-  remise double DEFAULT '0',
+  fk_statut	smallint DEFAULT 0 NOT NULL,	-- 0=draft, 1=validated, 2=accepted, 3=refused, 4=billed/closed
+  price double DEFAULT 0,
+  remise_percent double DEFAULT 0,
+  remise_absolue double DEFAULT 0,
+  remise double DEFAULT 0,
   total_ht double(24,8) DEFAULT 0,
   tva double(24,8) DEFAULT 0,
   localtax1 double(24,8) DEFAULT 0,
diff --git a/htdocs/supplier_proposal/card.php b/htdocs/supplier_proposal/card.php
index 7e63dad93e93e577fa007e8c8ac4e798c6a2aa57..b230133d7b8140b33083bda56ff0e786c9017976 100644
--- a/htdocs/supplier_proposal/card.php
+++ b/htdocs/supplier_proposal/card.php
@@ -261,7 +261,7 @@ if (empty($reshook))
 					$object->modelpdf = GETPOST('model');
 					$object->author = $user->id; // deprecated
 					$object->note = GETPOST('note');
-					$object->statut = 0;
+					$object->statut = SupplierProposal::STATUS_DRAFT;
 
 					$id = $object->create_from($user);
 				} else {
@@ -436,16 +436,16 @@ if (empty($reshook))
 	// Reopen proposal
 	else if ($action == 'confirm_reopen' && $user->rights->supplier_proposal->cloturer && ! GETPOST('cancel')) {
 		// prevent browser refresh from reopening proposal several times
-		if ($object->statut == 2 || $object->statut == 3 || $object->statut == 4) {
-			$object->reopen($user, 1);
+		if ($object->statut == SupplierProposal::STATUS_SIGNED || $object->statut == SupplierProposal::STATUS_NOTSIGNED || $object->statut == SupplierProposal::STATUS_CLOSE) {
+			$object->reopen($user, SupplierProposal::STATUS_VALIDATED);
 		}
 	}
 
 	// Close proposal
 	else if ($action == 'close' && $user->rights->supplier_proposal->cloturer && ! GETPOST('cancel')) {
-		// prevent browser refresh from reopening proposal several times
-		if ($object->statut == 2) {
-			$object->setStatut(4);
+	    // prevent browser refresh from reopening proposal several times
+	    if ($object->statut == SupplierProposal::STATUS_SIGNED) {
+			$object->setStatut(SupplierProposal::STATUS_CLOSE);
 		}
 	}
 
@@ -456,7 +456,7 @@ if (empty($reshook))
 			$action = 'statut';
 		} else {
 			// prevent browser refresh from closing proposal several times
-			if ($object->statut == 1) {
+			if ($object->statut == SupplierProposal::STATUS_VALIDATED) {
                 $object->cloture($user, GETPOST('statut'), GETPOST('note'));
 			}
 		}
@@ -1239,7 +1239,7 @@ if ($action == 'create')
 		$sql .= ", " . MAIN_DB_PREFIX . "societe s";
 		$sql .= " WHERE s.rowid = p.fk_soc";
 		$sql .= " AND p.entity = " . $conf->entity;
-		$sql .= " AND p.fk_statut <> 0";
+		$sql .= " AND p.fk_statut <> ".SupplierProposal::STATUS_DRAFT;
 		$sql .= " ORDER BY Id";
 
 		$resql = $db->query($sql);
@@ -1658,7 +1658,7 @@ if ($action == 'create')
 	<input type="hidden" name="id" value="' . $object->id . '">
 	';
 
-	if (! empty($conf->use_javascript_ajax) && $object->statut == 0) {
+	if (! empty($conf->use_javascript_ajax) && $object->statut == SupplierProposal::STATUS_DRAFT) {
 		include DOL_DOCUMENT_ROOT . '/core/tpl/ajaxrow.tpl.php';
 	}
 
@@ -1673,12 +1673,10 @@ if ($action == 'create')
 		$ret = $object->printObjectLines($action, $soc, $mysoc, $lineid, 1);
 
 	// Form to add new line
-	if ($object->statut == 0 && $user->rights->supplier_proposal->creer)
+	if ($object->statut == SupplierProposal::STATUS_DRAFT && $user->rights->supplier_proposal->creer)
 	{
 		if ($action != 'editline')
 		{
-			$var = true;
-
 			// Add products/services form
 			$object->formAddObjectLine(1, $soc, $mysoc);
 
@@ -1735,7 +1733,7 @@ if ($action == 'create')
 			if ($action != 'statut' && $action != 'editline')
 			{
 				// Validate
-				if ($object->statut == 0 && $object->total_ttc >= 0 && count($object->lines) > 0 &&
+				if ($object->statut == SupplierProposal::STATUS_DRAFT && $object->total_ttc >= 0 && count($object->lines) > 0 &&
 			        ((empty($conf->global->MAIN_USE_ADVANCED_PERMS) && ! empty($user->rights->supplier_proposal->creer))
        				|| (! empty($conf->global->MAIN_USE_ADVANCED_PERMS) && ! empty($user->rights->supplier_proposal->validate_advance)))
 				) {
@@ -1745,18 +1743,18 @@ if ($action == 'create')
 				}
 
 				// Edit
-				if ($object->statut == 1 && $user->rights->supplier_proposal->creer) {
+				if ($object->statut == SupplierProposal::STATUS_VALIDATED && $user->rights->supplier_proposal->creer) {
 					print '<div class="inline-block divButAction"><a class="butAction" href="' . $_SERVER["PHP_SELF"] . '?id=' . $object->id . '&amp;action=modif">' . $langs->trans('Modify') . '</a></div>';
 				}
 
 				// ReOpen
-				if (($object->statut == 2 || $object->statut == 3 || $object->statut == 4) && $user->rights->supplier_proposal->cloturer) {
+				if (($object->statut == SupplierProposal::STATUS_SIGNED || $object->statut == SupplierProposal::STATUS_NOTSIGNED || $object->statut == SupplierProposal::STATUS_CLOSE) && $user->rights->supplier_proposal->cloturer) {
 					print '<div class="inline-block divButAction"><a class="butAction" href="' . $_SERVER["PHP_SELF"] . '?id=' . $object->id . '&amp;action=reopen' . (empty($conf->global->MAIN_JUMP_TAG) ? '' : '#reopen') . '"';
 					print '>' . $langs->trans('ReOpen') . '</a></div>';
 				}
 
 				// Send
-				if ($object->statut == 1 || $object->statut == 2) {
+				if ($object->statut == SupplierProposal::STATUS_VALIDATED || $object->statut == SupplierProposal::STATUS_SIGNED) {
 					if (empty($conf->global->MAIN_USE_ADVANCED_PERMS) || $user->rights->supplier_proposal->send_advance) {
 						print '<div class="inline-block divButAction"><a class="butAction" href="' . $_SERVER["PHP_SELF"] . '?id=' . $object->id . '&amp;action=presend&amp;mode=init">' . $langs->trans('SendByMail') . '</a></div>';
 					} else
@@ -1764,20 +1762,20 @@ if ($action == 'create')
 				}
 
 				// Create an order
-				if (! empty($conf->commande->enabled) && $object->statut == 2) {
+				if (! empty($conf->commande->enabled) && $object->statut == SupplierProposal::STATUS_SIGNED) {
 					if ($user->rights->fournisseur->commande->creer) {
 						print '<div class="inline-block divButAction"><a class="butAction" href="' . DOL_URL_ROOT . '/fourn/commande/card.php?action=create&amp;origin=' . $object->element . '&amp;originid=' . $object->id . '&amp;socid=' . $object->socid . '">' . $langs->trans("AddOrder") . '</a></div>';
 					}
 				}
 
 				// Set accepted/refused
-				if ($object->statut == 1 && $user->rights->supplier_proposal->cloturer) {
+				if ($object->statut == SupplierProposal::STATUS_VALIDATED && $user->rights->supplier_proposal->cloturer) {
 					print '<div class="inline-block divButAction"><a class="butAction" href="' . $_SERVER["PHP_SELF"] . '?id=' . $object->id . '&amp;action=statut' . (empty($conf->global->MAIN_JUMP_TAG) ? '' : '#acceptedrefused') . '"';
 					print '>' . $langs->trans('SetAcceptedRefused') . '</a></div>';
 				}
 
 				// Close
-				if ($object->statut == 2 && $user->rights->supplier_proposal->cloturer) {
+				if ($object->statut == SupplierProposal::STATUS_SIGNED && $user->rights->supplier_proposal->cloturer) {
 				    print '<div class="inline-block divButAction"><a class="butAction" href="' . $_SERVER["PHP_SELF"] . '?id=' . $object->id . '&amp;action=close' . (empty($conf->global->MAIN_JUMP_TAG) ? '' : '#close') . '"';
 				    print '>' . $langs->trans('Close') . '</a></div>';
 				}
@@ -1788,7 +1786,7 @@ if ($action == 'create')
 				}
 
 				// Delete
-				if (($object->statut == 0 && $user->rights->supplier_proposal->creer) || $user->rights->supplier_proposal->supprimer) {
+				if (($object->statut == SupplierProposal::STATUS_DRAFT && $user->rights->supplier_proposal->creer) || $user->rights->supplier_proposal->supprimer) {
 					print '<div class="inline-block divButAction"><a class="butActionDelete" href="' . $_SERVER["PHP_SELF"] . '?id=' . $object->id . '&amp;action=delete"';
 					print '>' . $langs->trans('Delete') . '</a></div>';
 				}
@@ -1811,8 +1809,6 @@ if ($action == 'create')
 		$genallowed = $user->rights->supplier_proposal->creer;
 		$delallowed = $user->rights->supplier_proposal->supprimer;
 
-		$var = true;
-
 		print $formfile->showdocuments('supplier_proposal', $filename, $filedir, $urlsource, $genallowed, $delallowed, $object->modelpdf, 1, 0, 0, 28, 0, '', 0, '', $soc->default_lang);
 
 		
diff --git a/htdocs/supplier_proposal/class/supplier_proposal.class.php b/htdocs/supplier_proposal/class/supplier_proposal.class.php
index 7d5997c849ee54afad53331744c53214768d3c4e..b140daa280c7d9a3c70d8e884caf81e82bd44247 100644
--- a/htdocs/supplier_proposal/class/supplier_proposal.class.php
+++ b/htdocs/supplier_proposal/class/supplier_proposal.class.php
@@ -158,9 +158,9 @@ class SupplierProposal extends CommonObject
 	 */
 	const STATUS_NOTSIGNED = 3;
 	/**
-	 * Billed or processed quote
+	 * Billed or closed/processed quote
 	 */
-	const STATUS_BILLED = 4;	
+	const STATUS_CLOSE = 4;	
 	
 	
 	
@@ -1143,9 +1143,8 @@ class SupplierProposal extends CommonObject
                 $this->note                 = $obj->note_private; // TODO deprecated
                 $this->note_private         = $obj->note_private;
                 $this->note_public          = $obj->note_public;
-                $this->statut               = $obj->fk_statut;
+                $this->statut               = (int) $obj->fk_statut;
                 $this->statut_libelle       = $obj->statut_label;
-
                 $this->datec                = $this->db->jdate($obj->datec); // TODO deprecated
                 $this->datev                = $this->db->jdate($obj->datev); // TODO deprecated
                 $this->date_creation		= $this->db->jdate($obj->datec); //Creation date