diff --git a/firewall.yml b/firewall.yml
index 909be1a7..9f45a519 100644
--- a/firewall.yml
+++ b/firewall.yml
@@ -2,7 +2,7 @@
 #
 
 ipv4:
-    tcp: [22, 25, 53, 80, 443, 5222, 5269, 5280]
-    udp: [53]
+    TCP: [22, 25, 53, 80, 443, 5222, 5269, 5280]
+    UDP: [53]
 
 ipv6: