diff --git a/classes/order/OrderHistory.php b/classes/order/OrderHistory.php
index 73d45017f..c9a87ff90 100644
--- a/classes/order/OrderHistory.php
+++ b/classes/order/OrderHistory.php
@@ -217,7 +217,7 @@ class OrderHistoryCore extends ObjectModel
 			die(Tools::displayError('Invalid new order state'));
 
 		// the order is valid if and only if the invoice is available and the order is not cancelled
-		$order->->current_state = $this->id_order_state;
+		$order->current_state = $this->id_order_state;
 		$order->valid = $new_os->logable;
 		$order->update();