diff --git a/htdocs/ticket/contact.php b/htdocs/ticket/contact.php
index bee8358e5aa..73efc14a038 100644
--- a/htdocs/ticket/contact.php
+++ b/htdocs/ticket/contact.php
@@ -146,7 +146,7 @@ if ($id > 0 || !empty($track_id) || !empty($ref)) {
 			print dol_get_fiche_end();
 		}
 
-		if (!$user->socid && $conf->global->TICKET_LIMIT_VIEW_ASSIGNED_ONLY) {
+		if (!$user->socid && !empty($conf->global->TICKET_LIMIT_VIEW_ASSIGNED_ONLY)) {
 			$object->next_prev_filter = "te.fk_user_assign = '".$user->id."'";
 		} elseif ($user->socid > 0) {
 			$object->next_prev_filter = "te.fk_soc = '".$user->socid."'";