diff --git a/common/boot/bios.nix b/common/boot/bios.nix
index 042a30b..b929d73 100644
--- a/common/boot/bios.nix
+++ b/common/boot/bios.nix
@@ -13,7 +13,7 @@ in {
 
   config = mkIf cfg.enable {
     # Enable microcode
-    firmware.x86_64 = true;
+    firmware.x86_64.enable = true;
     # Use GRUB 2 for BIOS
     boot.loader = {
       timeout = 2;
diff --git a/common/boot/efi.nix b/common/boot/efi.nix
index 1042d50..bfcac09 100644
--- a/common/boot/efi.nix
+++ b/common/boot/efi.nix
@@ -10,7 +10,7 @@ in {
 
   config = mkIf cfg.enable {
     # Enable microcode
-    firmware.x86_64 = true;
+    firmware.x86_64.enable = true;
     # Use GRUB2 for EFI
     boot.loader = {
       efi.canTouchEfiVariables = true;
diff --git a/common/boot/firmware.nix b/common/boot/firmware.nix
index b99c0dd..a1e1551 100644
--- a/common/boot/firmware.nix
+++ b/common/boot/firmware.nix
@@ -8,7 +8,7 @@ in {
     enable = mkEnableOption "enable x86_64 firmware";
   };
 
-  config = mkIf cfg.firmware.x86_64 {
+  config = mkIf cfg.firmware.x86_64.enable {
     hardware.cpu.intel.updateMicrocode = true;
     hardware.cpu.amd.updateMicrocode = true;
   };