diff --git a/zephyr/management/commands/create_realm.py b/zephyr/management/commands/create_realm.py
index f4274ed41a..adac19206a 100644
--- a/zephyr/management/commands/create_realm.py
+++ b/zephyr/management/commands/create_realm.py
@@ -1,16 +1,31 @@
 from __future__ import absolute_import
+from optparse import make_option
 
 from django.core.management.base import BaseCommand
 from zephyr.lib.actions import do_create_realm
 
 class Command(BaseCommand):
-    help = "Create a realm for the specified domain(s)."
+    help = """Create a realm for the specified domain.
+
+Usage: python manage.py create_realm foo.com"""
+
+    option_list = BaseCommand.option_list + (
+        make_option('-o', '--open-realm',
+                    dest='open_realm',
+                    action="store_true",
+                    default=False,
+                    help='Make this an open realm.'),
+        )
 
     def handle(self, *args, **options):
-        for domain in args:
-            realm, created = do_create_realm(domain)
-            if created:
-                print domain + ": Created."
-            else:
-                print domain + ": Already exists."
+        if not args:
+            self.print_help("python manage.py", "create_realm")
+            exit(1)
 
+        domain = args[0]
+        realm, created = do_create_realm(
+            domain, restricted_to_domain=not options["open_realm"])
+        if created:
+            print domain, "created."
+        else:
+            print domain, "already exists."