diff --git a/windows/registry/syscall.go b/windows/registry/syscall.go
index c8a986f4..5426cae9 100644
--- a/windows/registry/syscall.go
+++ b/windows/registry/syscall.go
@@ -8,7 +8,7 @@ package registry
 
 import "syscall"
 
-//go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -xsys -output zsyscall_windows.go syscall.go
+//go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -output zsyscall_windows.go syscall.go
 
 const (
 	_REG_OPTION_NON_VOLATILE = 0
diff --git a/windows/syscall_windows.go b/windows/syscall_windows.go
index 863f103e..78991e8b 100644
--- a/windows/syscall_windows.go
+++ b/windows/syscall_windows.go
@@ -14,7 +14,7 @@ import (
 	"unsafe"
 )
 
-//go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -xsys -output zsyscall_windows.go eventlog.go service.go syscall_windows.go security_windows.go
+//go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -output zsyscall_windows.go eventlog.go service.go syscall_windows.go security_windows.go
 
 type Handle uintptr