diff --git a/app/scodoc/sco_groups.py b/app/scodoc/sco_groups.py
index b06a8e46..e14ae526 100644
--- a/app/scodoc/sco_groups.py
+++ b/app/scodoc/sco_groups.py
@@ -690,7 +690,8 @@ def setGroups(
         try:
             group_id = int(group_id)
         except ValueError as exc:
-            raise ValueError("invalid group_id: not an integer")
+            log("setGroups: ignoring invalid group_id={group_id}")
+            continue
         group = get_group(group_id)
         # Anciens membres du groupe:
         old_members = get_group_members(group_id)