diff --git a/kfet/auth/apps.py b/kfet/auth/apps.py
index d91931f5..d822c80f 100644
--- a/kfet/auth/apps.py
+++ b/kfet/auth/apps.py
@@ -10,5 +10,22 @@ class KFetAuthConfig(AppConfig):
 
     def ready(self):
         from . import signals  # noqa
-        from .utils import setup_kfet_generic_user
-        post_migrate.connect(setup_kfet_generic_user, sender=self)
+        post_migrate.connect(finish_setup_kfet_generic_user, sender=self)
+
+
+def finish_setup_kfet_generic_user(sender, apps, **kwargs):
+    from kfet.models import Account
+    from .utils import setup_kfet_generic_user
+    # Even if no kfetauth migration has been applied, the post_migrate signal
+    # is issued for KFetAuthConfig.
+    # Before finishing setup of the kfet generic user, check dependencies are
+    # ready: kfet.Account model and gestion.Profile (old schema may not use
+    # this model).
+    try:
+        apps.get_model('kfet', 'Account')
+        apps.get_model('gestion', 'Profile')
+        Account.objects.get_generic()
+    except (LookupError, Account.DoesNotExist):
+        return
+
+    setup_kfet_generic_user()
diff --git a/kfet/auth/utils.py b/kfet/auth/utils.py
index 053e5798..f4979fef 100644
--- a/kfet/auth/utils.py
+++ b/kfet/auth/utils.py
@@ -15,7 +15,7 @@ def get_kfet_generic_user():
     return Account.objects.get_generic().user
 
 
-def setup_kfet_generic_user(**kwargs):
+def setup_kfet_generic_user():
     """
     First steps of setup of the kfet generic user are done in a migration, as
     it is more robust against database schema changes.
diff --git a/kfet/migrations/0062_delete_globalpermissions.py b/kfet/migrations/0062_delete_globalpermissions.py
new file mode 100644
index 00000000..ee245412
--- /dev/null
+++ b/kfet/migrations/0062_delete_globalpermissions.py
@@ -0,0 +1,14 @@
+# -*- coding: utf-8 -*-
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ('kfet', '0061_add_perms_config'),
+    ]
+
+    operations = [
+        migrations.DeleteModel(
+            name='GlobalPermissions',
+        ),
+    ]
diff --git a/kfet/migrations/0062_generic_profiles.py b/kfet/migrations/0063_generic_profiles.py
similarity index 92%
rename from kfet/migrations/0062_generic_profiles.py
rename to kfet/migrations/0063_generic_profiles.py
index 08b75935..160e29f8 100644
--- a/kfet/migrations/0062_generic_profiles.py
+++ b/kfet/migrations/0063_generic_profiles.py
@@ -8,7 +8,7 @@ class Migration(migrations.Migration):
 
     dependencies = [
         ('cof', '0014_move_profile'),
-        ('kfet', '0061_add_perms_config'),
+        ('kfet', '0062_delete_globalpermissions'),
     ]
 
     operations = [