diff --git a/htdocs/product/reassortlot.php b/htdocs/product/reassortlot.php
index f3ad55d526d..babdcce2783 100644
--- a/htdocs/product/reassortlot.php
+++ b/htdocs/product/reassortlot.php
@@ -659,6 +659,7 @@ while ($i < $imaxinloop) {
 
 	if (isModEnabled("service") && $type == 1) {
 		print '<td class="center">';
+		$regs = array();
 		if (preg_match('/([0-9]+)y/i', $objp->duration, $regs)) {
 			print $regs[1].' '.$langs->trans("DurationYear");
 		} elseif (preg_match('/([0-9]+)m/i', $objp->duration, $regs)) {