diff --git a/dal/settings.py b/dal/settings.py
index 81872b2..867c8db 100644
--- a/dal/settings.py
+++ b/dal/settings.py
@@ -31,7 +31,7 @@ BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 
 DEBUG = config('DEBUG', default=False, cast=bool)
 
-ALLOWED_HOSTS = (os.environ.get('ALLOWED_HOSTS', 'localhost')).split(",")
+ALLOWED_HOSTS = config('ALLOWED_HOSTS', cast=Csv())
 
 INSTALLED_APPS = [
     'django.contrib.admin',