diff --git a/modules/default.nix b/modules/default.nix
index b6ee512..f3a4b85 100644
--- a/modules/default.nix
+++ b/modules/default.nix
@@ -163,8 +163,8 @@
     (lib.mkIf (!config.sbruder.machine.isVm) {
       # Hard drive monitoring
       services.smartd.enable = lib.mkDefault true;
-      # Firmware updates
-      services.fwupd.enable = lib.mkDefault true;
+      # Firmware updates (only work on EFI systems, so enable only when using systemd-boot)
+      services.fwupd.enable = lib.mkDefault (config.boot.loader.systemd-boot.enable);
     })
     (lib.mkIf (!config.sbruder.full) {
       documentation.enable = lib.mkDefault false;