diff --git a/runtests.py b/runtests.py
index 6fd37ebeb8..346729653f 100755
--- a/runtests.py
+++ b/runtests.py
@@ -101,7 +101,8 @@ if not settings.configured:
         ),
         COMPRESS_ENABLED=False,  # disable compression so that we can run tests on the content of the compress tag
         WAGTAILSEARCH_BACKENDS=WAGTAILSEARCH_BACKENDS,
-        WAGTAIL_SITE_NAME='Test Site'
+        WAGTAIL_SITE_NAME='Test Site',
+        LOGIN_REDIRECT_URL = 'wagtailadmin_home',
     )