diff --git a/nixos/hosts/osaka-linode-01/firewall.nix b/nixos/hosts/osaka-linode-01/firewall.nix
index d146ecaa..6f9654b7 100644
--- a/nixos/hosts/osaka-linode-01/firewall.nix
+++ b/nixos/hosts/osaka-linode-01/firewall.nix
@@ -6,10 +6,10 @@
         443   # HTTPS
         42420 # Vintage Story
         25565 # Minecraft
-        1443  # Headscale DERP
+        1443  # Headscale DERP (tcp)
       ];
       allowedUDPPorts = [
-        3478  # Headscale DERP UDP
+        3478  # Headscale DERP (udp)
       ];
     };