diff --git a/kubernetes/apps/database/mosquitto/app/helmrelease.yaml b/kubernetes/apps/database/mosquitto/app/helmrelease.yaml
index f2986e23e..43bede629 100644
--- a/kubernetes/apps/database/mosquitto/app/helmrelease.yaml
+++ b/kubernetes/apps/database/mosquitto/app/helmrelease.yaml
@@ -95,7 +95,7 @@ spec:
         type: LoadBalancer
         externalTrafficPolicy: Local
         annotations:
-          external-dns.alpha.kubernetes.io/hostname: "mqtt.${SECRET_PUBLIC_DOMAIN}."
+          external-dns.alpha.kubernetes.io/hostname: "mqtt.${SECRET_EXTERNAL_DOMAIN}"
         ports:
           mqtt:
             port: 1883