diff --git a/serial.go b/serial.go
index 1bf5bb9..d50e1f7 100644
--- a/serial.go
+++ b/serial.go
@@ -6,7 +6,7 @@
 
 package serial
 
-//go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -output zsyscall_windows.go syscall_windows.go
+//go:generate go run golang.org/x/sys/windows/mkwinsyscall -output zsyscall_windows.go syscall_windows.go
 
 // Port is the interface for a serial Port
 type Port interface {