diff --git a/wagtail/tests/settings.py b/wagtail/tests/settings.py
index 96d919cbd..03f2d72e8 100644
--- a/wagtail/tests/settings.py
+++ b/wagtail/tests/settings.py
@@ -11,13 +11,8 @@ MEDIA_URL = '/media/'
 
 DATABASES = {
     'default': {
-        'ENGINE': os.environ.get('DATABASE_ENGINE', 'django.db.backends.postgresql_psycopg2'),
-        'NAME': os.environ.get('DATABASE_NAME', 'wagtaildemo'),
-        'TEST_NAME': os.environ.get('DATABASE_NAME', 'test_wagtaildemo'),
-        'USER': os.environ.get('DATABASE_USER', 'postgres'),
-        'PASSWORD': os.environ.get('DATABASE_PASS', None),
-        'HOST': os.environ.get('DATABASE_HOST', None),
-        'PORT': os.environ.get('DATABASE_PORT', None),
+        'ENGINE': os.environ.get('DATABASE_ENGINE', 'django.db.backends.sqlite3'),
+        'NAME': os.environ.get('DATABASE_NAME', 'wagtail'),
     }
 }