diff --git a/hypervisor/src/hardware_vt/svm.rs b/hypervisor/src/hardware_vt/svm.rs
index 541b6bb..5b47ac0 100644
--- a/hypervisor/src/hardware_vt/svm.rs
+++ b/hypervisor/src/hardware_vt/svm.rs
@@ -477,7 +477,7 @@ extern "efiapi" {
     /// Runs the guest until #VMEXIT occurs.
     fn run_vm_svm(registers: &mut GuestRegisters, guest_vmcb_pa: *mut Vmcb);
 }
-global_asm!(include_str!("svm_run_vm.nasm"));
+global_asm!(include_str!("svm_run_vm.S"));
 
 /// Returns the access rights of the given segment for SVM.
 fn get_segment_access_right(table_base: u64, selector: u16) -> u16 {
diff --git a/hypervisor/src/hardware_vt/svm_run_vm.nasm b/hypervisor/src/hardware_vt/svm_run_vm.S
similarity index 100%
rename from hypervisor/src/hardware_vt/svm_run_vm.nasm
rename to hypervisor/src/hardware_vt/svm_run_vm.S
diff --git a/hypervisor/src/hardware_vt/vmx.rs b/hypervisor/src/hardware_vt/vmx.rs
index 8676464..3bcbd59 100644
--- a/hypervisor/src/hardware_vt/vmx.rs
+++ b/hypervisor/src/hardware_vt/vmx.rs
@@ -739,7 +739,7 @@ extern "efiapi" {
     /// Runs the guest until VM-exit occurs.
     fn run_vm_vmx(registers: &mut GuestRegisters, launched: u64) -> u64;
 }
-global_asm!(include_str!("vmx_run_vm.nasm"));
+global_asm!(include_str!("vmx_run_vm.S"));
 
 /// The wrapper of the VMXON instruction.
 fn vmxon(vmxon_region: &mut Vmxon) {
diff --git a/hypervisor/src/hardware_vt/vmx_run_vm.nasm b/hypervisor/src/hardware_vt/vmx_run_vm.S
similarity index 100%
rename from hypervisor/src/hardware_vt/vmx_run_vm.nasm
rename to hypervisor/src/hardware_vt/vmx_run_vm.S