diff --git a/modules/nixos/services/gui/default.nix b/modules/nixos/services/gui/default.nix
index 5b7c66b..541f2da 100644
--- a/modules/nixos/services/gui/default.nix
+++ b/modules/nixos/services/gui/default.nix
@@ -207,6 +207,7 @@ in
 
     # remote desktop
     networking.firewall.allowedTCPPorts = [ 3389 ];
+    networking.firewall.allowedUDPPorts = [ 3389 ];
     services.gnome.gnome-remote-desktop.enable = true;
     systemd.services.gnome-remote-desktop = {
       wantedBy = [ "graphical.target" ];