diff --git a/app/scodoc/sco_groups.py b/app/scodoc/sco_groups.py
index d32a12db..c5f68fe0 100644
--- a/app/scodoc/sco_groups.py
+++ b/app/scodoc/sco_groups.py
@@ -560,10 +560,10 @@ def XMLgetGroupsInPartition(partition_id):  # was XMLgetGroupesTD
         x_group = Element(
             "group",
             partition_id=str(partition_id),
-            partition_name=partition["partition_name"],
+            partition_name=partition["partition_name"] or "",
             groups_editable=str(int(partition["groups_editable"])),
             group_id=str(group["group_id"]),
-            group_name=group["group_name"],
+            group_name=group["group_name"] or "",
         )
         x_response.append(x_group)
         for e in get_group_members(group["group_id"]):
@@ -572,10 +572,10 @@ def XMLgetGroupsInPartition(partition_id):  # was XMLgetGroupesTD
                 Element(
                     "etud",
                     etudid=str(e["etudid"]),
-                    civilite=etud["civilite_str"],
-                    sexe=etud["civilite_str"],  # compat
-                    nom=sco_etud.format_nom(etud["nom"]),
-                    prenom=sco_etud.format_prenom(etud["prenom"]),
+                    civilite=etud["civilite_str"] or "",
+                    sexe=etud["civilite_str"] or "",  # compat
+                    nom=sco_etud.format_nom(etud["nom"] or ""),
+                    prenom=sco_etud.format_prenom(etud["prenom"] or ""),
                     origin=_comp_etud_origin(etud, formsemestre),
                 )
             )