diff --git a/app/models/etudiants.py b/app/models/etudiants.py
index fb98e98b1..61f34296b 100644
--- a/app/models/etudiants.py
+++ b/app/models/etudiants.py
@@ -46,7 +46,7 @@ class Identite(db.Model):
     # données d'état-civil. Si présent remplace les données d'usage dans les documents officiels (bulletins, PV)
     # cf nomprenom_etat_civil()
     civilite_etat_civil = db.Column(db.String(1), nullable=False, server_default="X")
-    prenom_etat_civil = db.Column(db.Text(), nullable=True)
+    prenom_etat_civil = db.Column(db.Text(), nullable=False, server_default="")
 
     date_naissance = db.Column(db.Date)
     lieu_naissance = db.Column(db.Text())
diff --git a/migrations/versions/cf29790ca6f6_ajout_prenom_civilite__etat_civil.py b/migrations/versions/cf29790ca6f6_ajout_prenom_civilite__etat_civil.py
index 8b13136ad..e0b4ce154 100644
--- a/migrations/versions/cf29790ca6f6_ajout_prenom_civilite__etat_civil.py
+++ b/migrations/versions/cf29790ca6f6_ajout_prenom_civilite__etat_civil.py
@@ -17,17 +17,30 @@ depends_on = None
 
 
 def upgrade():
-    # ### commands auto generated by Alembic - checked ###
-    op.add_column(
-        "identite",
-        sa.Column("civilite_etat_civil", sa.Text(), nullable=True, server_default="X"),
-    )
-    op.add_column("identite", sa.Column("prenom_etat_civil", sa.Text(), nullable=True))
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("identite", schema=None) as batch_op:
+        batch_op.add_column(
+            sa.Column(
+                "civilite_etat_civil",
+                sa.String(length=1),
+                server_default="X",
+                nullable=False,
+            )
+        )
+        batch_op.add_column(
+            sa.Column("prenom_etat_civil", sa.Text(), server_default="", nullable=False)
+        )
+
+        batch_op.create_check_constraint(
+            "identite_civ_etat_civ_check",
+            "civilite_etat_civil IN ('M', 'F', 'X')",
+        )
+
     # ### end Alembic commands ###
 
 
 def downgrade():
-    # ### commands auto generated by Alembic - checked ###
-    op.drop_column("identite", "prenom_etat_civil")
-    op.drop_column("identite", "civilite_etat_civil")
-    # ### end Alembic commands ###
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("identite", schema=None) as batch_op:
+        batch_op.drop_column("prenom_etat_civil")
+        batch_op.drop_column("civilite_etat_civil")