diff --git a/smoothschedule/compose/production/traefik/traefik.yml b/smoothschedule/compose/production/traefik/traefik.yml
index 1016ed9..db26af3 100644
--- a/smoothschedule/compose/production/traefik/traefik.yml
+++ b/smoothschedule/compose/production/traefik/traefik.yml
@@ -100,7 +100,8 @@ http:
     # Uses DNS challenge for wildcard certificate (*.smoothschedule.com)
     # Routes to nginx which serves the frontend SPA and proxies /api/ to Django
     subdomain-router:
-      rule: 'HostRegexp(`{subdomain:[a-z0-9-]+}.smoothschedule.com`)'
+      rule: 'HostRegexp(`^[a-z0-9-]+\\.smoothschedule\\.com$`)'
+      priority: 1
       entryPoints:
         - web-secure
       middlewares: