diff --git a/docker/docker-compose.override.yml.sample b/docker/docker-compose.override.yml.sample
index 6124c58..f55ac9e 100644
--- a/docker/docker-compose.override.yml.sample
+++ b/docker/docker-compose.override.yml.sample
@@ -8,7 +8,7 @@ services:
 
   powerdns:
     ports:
-      - "53/udp:53/udp"
+      - "53:53/udp"
 
   redis:
     volumes: