diff --git a/lemarche/api/tenders/serializers.py b/lemarche/api/tenders/serializers.py
index 8bede41ec..418e45173 100644
--- a/lemarche/api/tenders/serializers.py
+++ b/lemarche/api/tenders/serializers.py
@@ -36,6 +36,7 @@ class Meta:
             "why_amount_is_blank",
             "accept_share_amount",
             "accept_cocontracting",
+            "siae_kind",
             # contact
             "contact_first_name",
             "contact_last_name",