diff --git a/grandlyon/scripts/copy-roles.py b/grandlyon/scripts/copy-roles.py
index f701a6d..aa3e0b4 100644
--- a/grandlyon/scripts/copy-roles.py
+++ b/grandlyon/scripts/copy-roles.py
@@ -4,16 +4,13 @@ import sys
 
 from authentic2.a2_rbac.models import OrganizationalUnit, Role
 
-Ou = get_ou_model()
-Role = get_role_model()
-
 mapping = {}
 
 name_src = sys.argv[1]
 name_dst = sys.argv[2]
 
-ou_src = Ou.objects.get(name=name_src)
-ou = Ou.objects.get(name=name_dst)
+ou_src = OrganizationalUnit.objects.get(name=name_src)
+ou = OrganizationalUnit.objects.get(name=name_dst)
 
 agent_role = None