diff --git a/cotisations/api/serializers.py b/cotisations/api/serializers.py
index bfc785c7..c9afa8ce 100644
--- a/cotisations/api/serializers.py
+++ b/cotisations/api/serializers.py
@@ -112,7 +112,6 @@ class CotisationSerializer(NamespacedHMSerializer):
         model = cotisations.Cotisation
         fields = (
             "vente",
-            "type_cotisation",
             "date_start_con",
             "date_end_con",
             "date_start_memb",