diff --git a/htdocs/projet/ganttview.php b/htdocs/projet/ganttview.php
index c4d2e12a48a..d4bc3b71ae5 100644
--- a/htdocs/projet/ganttview.php
+++ b/htdocs/projet/ganttview.php
@@ -217,8 +217,9 @@ if (sizeof($tasksarray)>0)
 			}
 		}
 		if (sizeof($idofusers)>0 && (sizeof($idofthirdparty)>0)) $s.=' - ';
-		if (sizeof($idofusers)>0)
+		if (sizeof($idofthirdparty)>0)
 		{
+			if ($s) $s.=' - ';
 			$s.=$langs->trans("Externals").': ';
 			$i=0;
 			foreach($idofthirdparty as $key => $valid)