diff --git a/conventions/admin.py b/conventions/admin.py
index 45a5f6e91..8b03836d0 100644
--- a/conventions/admin.py
+++ b/conventions/admin.py
@@ -78,20 +78,25 @@ def view_programme_operation(convention):
     return convention.programme.numero_operation
 
 
+@admin.display(description="Financement")
+def view_financement(convention):
+    return convention.lot.financement
+
+
 @admin.register(Convention)
 class ConventionAdmin(ApilosModelAdmin):
     list_display = (
         view_programme,
         "administration",
         "bailleur",
-        "financement",
+        view_financement,
         "uuid",
         view_programme_operation,
     )
     search_fields = [
         "programme__ville",
         "programme__nom",
-        "financement",
+        "lot__financement",
         "uuid",
         "programme__bailleur__nom",
         "programme__administration__nom",
@@ -107,7 +112,6 @@ class ConventionAdmin(ApilosModelAdmin):
         "numero",
         "numero_pour_recherche",
         "date_fin_conventionnement",
-        "financement",
         "fond_propre",
         "commentaires",
         "statut",
diff --git a/conventions/migrations/0087_remove_convention_financement.py b/conventions/migrations/0087_remove_convention_financement.py
new file mode 100644
index 000000000..1195031b5
--- /dev/null
+++ b/conventions/migrations/0087_remove_convention_financement.py
@@ -0,0 +1,31 @@
+# Generated by Django 4.2.13 on 2024-07-03 15:53
+
+from django.db import migrations
+from django.db.models import F, Q
+
+
+def check_convention_lot_financement(apps, schema_editor):
+    Convention = apps.get_model("conventions", "Convention")
+
+    qs = Convention.objects.annotate(lot_financement=F("lot__financement")).filter(
+        ~Q(financement=F("lot_financement"))
+    )
+
+    assert qs.count() == 0, list(qs.values_list("id", "financement", "lot_financement"))
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("conventions", "0086_alter_convention_financement"),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            check_convention_lot_financement,
+            migrations.RunPython.noop,
+        ),
+        migrations.RemoveField(
+            model_name="convention",
+            name="financement",
+        ),
+    ]
diff --git a/conventions/models/convention.py b/conventions/models/convention.py
index 190e352ba..642890de3 100644
--- a/conventions/models/convention.py
+++ b/conventions/models/convention.py
@@ -47,22 +47,23 @@ class Meta:
                 name="convention_tele_signee_le_idx",
             ),
         ]
-        constraints = [
-            # https://github.com/betagouv/SPPNautInterface/issues/227
-            models.UniqueConstraint(
-                fields=["programme_id", "lot_id", "financement"],
-                condition=models.Q(
-                    statut__in=[
-                        ConventionStatut.PROJET.label,
-                        ConventionStatut.INSTRUCTION.label,
-                        ConventionStatut.CORRECTION.label,
-                        ConventionStatut.A_SIGNER.label,
-                        ConventionStatut.SIGNEE.label,
-                    ]
-                ),
-                name="unique_display_name",
-            )
-        ]
+        # FIXME: This constraint is not working anymore
+        # constraints = [
+        #     # https://github.com/betagouv/SPPNautInterface/issues/227
+        #     models.UniqueConstraint(
+        #         fields=["programme_id", "lot_id", "financement"],
+        #         condition=models.Q(
+        #             statut__in=[
+        #                 ConventionStatut.PROJET.label,
+        #                 ConventionStatut.INSTRUCTION.label,
+        #                 ConventionStatut.CORRECTION.label,
+        #                 ConventionStatut.A_SIGNER.label,
+        #                 ConventionStatut.SIGNEE.label,
+        #             ]
+        #         ),
+        #         name="unique_display_name",
+        #     )
+        # ]
 
     id = models.AutoField(primary_key=True)
     uuid = models.UUIDField(default=uuid.uuid4, editable=False, unique=True)
@@ -88,11 +89,6 @@ class Meta:
         related_name="conventions",
     )
     date_fin_conventionnement = models.DateField(null=True, blank=True)
-    financement = models.CharField(
-        max_length=25,
-        choices=Financement.choices,
-        default=Financement.PLUS,
-    )
     # fix me: weird to keep fond_propre here
     fond_propre = models.FloatField(null=True, blank=True)
     commentaires = models.TextField(null=True, blank=True)