diff --git a/classes/stock/StockMvt.php b/classes/stock/StockMvt.php
index b58bbf215..1235b396a 100644
--- a/classes/stock/StockMvt.php
+++ b/classes/stock/StockMvt.php
@@ -229,7 +229,7 @@ class StockMvtCore extends ObjectModel
 		$query->orderBy('date_add DESC');
 
 		$res = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($query);
-		if ($res !== false)
+		if ($res != false)
 			return $res['0'];
 		return false;
 	}