diff --git a/db/traefik.yml b/db/traefik.yml
index 5e0f932..aa50004 100644
--- a/db/traefik.yml
+++ b/db/traefik.yml
@@ -47,7 +47,7 @@ tcp:
         - "mqttsecure"
       service: pi-mqtt
       tls:
-        certResolver: "letsencrypt"
+        certResolver: letsencrypt
 
   services:
     pi-mqtt: