diff --git a/htdocs/opensurvey/card.php b/htdocs/opensurvey/card.php
index fdb138eaf76..20985a52647 100644
--- a/htdocs/opensurvey/card.php
+++ b/htdocs/opensurvey/card.php
@@ -404,7 +404,7 @@ print load_fiche_titre($langs->trans("CommentsOfVoters"), '', '');
 // Comment list
 $comments = $object->getComments();
 
-if ($comments) {
+if (!empty($comments)) {
 	foreach ($comments as $comment) {
 		if ($user->rights->opensurvey->write) {
 			print '<a class="reposition" href="'.DOL_URL_ROOT.'/opensurvey/card.php?action=deletecomment&token='.newToken().'&idcomment='.((int) $comment->id_comment).'&id='.urlencode($numsondage).'"> '.img_picto('', 'delete.png', '', false, 0, 0, '', '', 0).'</a> ';