diff --git a/tests/settings.py b/tests/settings.py
index 378f28f..9f0e682 100644
--- a/tests/settings.py
+++ b/tests/settings.py
@@ -45,7 +45,6 @@
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
     'django.middleware.security.SecurityMiddleware',
 
-    'wagtail.core.middleware.SiteMiddleware',
     'wagtail.contrib.redirects.middleware.RedirectMiddleware',
 ]