diff --git a/htdocs/commande/class/api_orders.class.php b/htdocs/commande/class/api_orders.class.php
index 086379a3989..7f2a5b03ae4 100644
--- a/htdocs/commande/class/api_orders.class.php
+++ b/htdocs/commande/class/api_orders.class.php
@@ -396,16 +396,16 @@ class Orders extends DolibarrApi
      * @return int
      */
     function put($id, $request_data = NULL) {
-      if(! DolibarrApiAccess::$user->rights->commande->creer) {
+      if (! DolibarrApiAccess::$user->rights->commande->creer) {
 		  	throw new RestException(401);
 		  }
 
         $result = $this->commande->fetch($id);
-        if( ! $result ) {
+        if (! $result) {
             throw new RestException(404, 'Order not found');
         }
 
-		if( ! DolibarrApi::_checkAccessToResource('commande',$this->commande->id)) {
+		if (! DolibarrApi::_checkAccessToResource('commande',$this->commande->id)) {
 			throw new RestException(401, 'Access not allowed for login '.DolibarrApiAccess::$user->login);
 		}
         foreach($request_data as $field => $value) {
@@ -414,12 +414,12 @@ class Orders extends DolibarrApi
         }
 
 	// Update availability
-	if( isset($this->commande->availability_id) && !empty($this->commande->availability_id) ) {
-	    if($this->commande->availability($this->commande->availability_id) < 0)
+	if (!empty($this->commande->availability_id)) {
+	    if ($this->commande->availability($this->commande->availability_id) < 0)
 		throw new RestException(400, 'Error while updating availability');
 	}
 
-        if($this->commande->update($id, DolibarrApiAccess::$user, 1, '', '', 'update'))
+        if ($this->commande->update($id, DolibarrApiAccess::$user, 1, '', '', 'update'))
             return $this->get($id);
 
         return false;