1 files changed, 1 insertions, 3 deletions
diff --git a/nixpkgs/nixos/modules/virtualisation/qemu-vm.nix b/nixpkgs/nixos/modules/virtualisation/qemu-vm.nix
index 75ba6dacc122..b5a8b08eee70 100644
--- a/nixpkgs/nixos/modules/virtualisation/qemu-vm.nix
+++ b/nixpkgs/nixos/modules/virtualisation/qemu-vm.nix
@@ -877,11 +877,9 @@ in
         type = types.package;
         default = (pkgs.OVMF.override {
           secureBoot = cfg.useSecureBoot;
-          systemManagementModeRequired = cfg.useSecureBoot;
         }).fd;
         defaultText = ''(pkgs.OVMF.override {
           secureBoot = cfg.useSecureBoot;
-          systemManagementModeRequired = cfg.useSecureBoot;
         }).fd'';
         description =
         lib.mdDoc "OVMF firmware package, defaults to OVMF configured with secure boot if needed.";
@@ -1185,7 +1183,7 @@ in
         "-tpmdev emulator,id=tpm_dev_0,chardev=chrtpm"
         "-device ${cfg.tpm.deviceModel},tpmdev=tpm_dev_0"
       ])
-      (mkIf (cfg.efi.OVMF.systemManagementModeRequired or false) [
+      (mkIf (pkgs.stdenv.hostPlatform.isx86 && cfg.efi.OVMF.systemManagementModeRequired) [
         "-machine" "q35,smm=on"
         "-global" "driver=cfi.pflash01,property=secure,value=on"
       ])