diff --git a/htdocs/core/lib/project.lib.php b/htdocs/core/lib/project.lib.php
index d354721332a..fa3967284d9 100644
--- a/htdocs/core/lib/project.lib.php
+++ b/htdocs/core/lib/project.lib.php
@@ -970,7 +970,7 @@ function print_projecttasks_array($db, $form, $socid, $projectsListId, $mytasks=
 	$sql2.= " LEFT JOIN ".MAIN_DB_PREFIX."societe as s ON s.rowid = p.fk_soc";
 	$sql2.= " LEFT JOIN ".MAIN_DB_PREFIX."projet_task as t ON p.rowid = t.fk_projet";
 	$sql2.= " WHERE p.rowid IN (".join(',',$arrayidofprojects).")";
-	$sql2.= " GROUP BY p.rowid, p.ref, p.title, p.fk_soc, p.fk_user_creat, p.public, p.fk_statut, p.fk_opp_status, p.opp_amount";
+	$sql2.= " GROUP BY p.rowid, p.ref, p.title, p.fk_soc, s.nom, p.fk_user_creat, p.public, p.fk_statut, p.fk_opp_status, p.opp_amount";
 	$sql2.= " ORDER BY p.title, p.ref";
 
 	$var=true;