diff --git a/playbooks/mrwho/vm03-firewall.yml b/playbooks/mrwho/vm03-firewall.yml
index 1b44c42..817aa9b 100644
--- a/playbooks/mrwho/vm03-firewall.yml
+++ b/playbooks/mrwho/vm03-firewall.yml
@@ -42,7 +42,7 @@
           - bgp
           - http
           - https
-        ports:
+        port:
           - 179/tcp
           - 179/udp
           - 443/tcp