diff --git a/services/web/docker-compose.common.env b/services/web/docker-compose.common.env
index 5281dee83a..d23e40b423 100644
--- a/services/web/docker-compose.common.env
+++ b/services/web/docker-compose.common.env
@@ -13,6 +13,7 @@ COOKIE_DOMAIN=.overleaf.test
 PUBLIC_URL=http://www.overleaf.test:3000
 HTTP_TEST_HOST=www.overleaf.test
 OT_JWT_AUTH_KEY=very secret key
+EXTERNAL_AUTH=none
 # Server-Pro LDAP
 SHARELATEX_LDAP_URL=ldap://ldap:389
 SHARELATEX_LDAP_SEARCH_BASE=ou=people,dc=planetexpress,dc=com