diff --git a/src/pretix/testutils/settings.py b/src/pretix/testutils/settings.py
index 643fc6e3d..967a69eed 100644
--- a/src/pretix/testutils/settings.py
+++ b/src/pretix/testutils/settings.py
@@ -33,3 +33,10 @@ CACHES = {
         'BACKEND': 'django.core.cache.backends.dummy.DummyCache',
     }
 }
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': ':memory:'
+    }
+}