diff --git a/modoboa/core/commands/deploy.py b/modoboa/core/commands/deploy.py
index 61ef81c03..28c55936a 100644
--- a/modoboa/core/commands/deploy.py
+++ b/modoboa/core/commands/deploy.py
@@ -82,6 +82,10 @@ class DeployCommand(Command):
             '--dont-install-extensions', action='store_true', default=False,
             help='Do not install extensions using pip'
         )
+        self._parser.add_argument(
+            '--admin-username', default='admin',
+            help="Username of the initial super administrator"
+        )
 
     def _exec_django_command(self, name, cwd, *args):
         """Run a django command for the freshly created project
@@ -249,7 +253,8 @@ class DeployCommand(Command):
             "migrate", parsed_args.name, '--noinput'
         )
         self._exec_django_command(
-            "load_initial_data", parsed_args.name
+            "load_initial_data", parsed_args.name,
+            "--admin-username", parsed_args.admin_username
         )
         if parsed_args.collectstatic:
             self._exec_django_command(
diff --git a/modoboa/core/management/commands/load_initial_data.py b/modoboa/core/management/commands/load_initial_data.py
index 88f47117a..093343324 100644
--- a/modoboa/core/management/commands/load_initial_data.py
+++ b/modoboa/core/management/commands/load_initial_data.py
@@ -24,10 +24,17 @@ class Command(BaseCommand):
 
     help = "Load Modoboa initial data"
 
+    def add_arguments(self, parser):
+        """Add extra arguments to command."""
+        parser.add_argument(
+            "--admin-username", default="admin",
+            help="Username of the initial super administrator."
+        )
+
     def handle(self, *args, **options):
         """Command entry point."""
         if not User.objects.filter(is_superuser=True).count():
-            admin = User(username="admin", is_superuser=True)
+            admin = User(username=options["admin_username"], is_superuser=True)
             admin.set_password("password")
             admin.save()
             ObjectAccess.objects.create(
diff --git a/modoboa/core/tests.py b/modoboa/core/tests.py
index 58093eb23..273716ed8 100644
--- a/modoboa/core/tests.py
+++ b/modoboa/core/tests.py
@@ -4,7 +4,7 @@ import httmock
 
 from django.core import management
 from django.core.urlresolvers import reverse
-from django.test import override_settings
+from django.test import override_settings, TestCase
 
 from modoboa.lib import exceptions
 from modoboa.lib import parameters
@@ -44,6 +44,17 @@ class AuthenticationTestCase(ModoTestCase):
         self.assertTrue(response.url.endswith(reverse("core:dashboard")))
 
 
+class ChangeDefaultAdminTestCase(TestCase):
+    """Try to change the default username."""
+
+    def test_management_command(self):
+        """Use dedicated option."""
+        management.call_command(
+            "load_initial_data", "--admin-username", "modoadmin")
+        self.assertTrue(
+            self.client.login(username="modoadmin", password="password"))
+
+
 class DashboardTestCase(ModoTestCase):
     """Dashboard tests."""
 
diff --git a/tests.py b/tests.py
index 21fc99b58..69a5e184f 100644
--- a/tests.py
+++ b/tests.py
@@ -24,7 +24,7 @@ class DeployTest(unittest.TestCase):
                self.dbhost, self.projname)
         cmd = (
             "modoboa-admin.py deploy --collectstatic "
-            "--dburl %s --domain %s %s"
+            "--dburl %s --domain %s --admin-username admin %s"
             % (dburl, 'localhost', self.projname)
         )
         code, output = exec_cmd(cmd, cwd=self.workdir)