diff --git a/app/scodoc/sco_groups.py b/app/scodoc/sco_groups.py
index 8b1da28ad..2f4bbe0fb 100644
--- a/app/scodoc/sco_groups.py
+++ b/app/scodoc/sco_groups.py
@@ -493,14 +493,12 @@ def etud_add_group_infos(
             etud["partitions"][info["partition_id"]] = info
 
     # resume textuel des groupes:
-    etud["groupes"] = sep.join(
-        [gr["group_name"] for gr in infos if gr["group_name"] is not None]
-    )
+    etud["groupes"] = sep.join([gr["group_name"] for gr in infos if gr["group_name"]])
     etud["partitionsgroupes"] = sep.join(
         [
             (gr["partition_name"] or "") + ":" + gr["group_name"]
             for gr in infos
-            if gr["group_name"] is not None
+            if gr["group_name"]
         ]
     )