diff --git a/serial_linux.go b/serial_linux.go
deleted file mode 120000
index ec037dc..0000000
--- a/serial_linux.go
+++ /dev/null
@@ -1 +0,0 @@
-serial_darwin.go
\ No newline at end of file
diff --git a/serial_darwin.go b/serial_posix.go
similarity index 99%
rename from serial_darwin.go
rename to serial_posix.go
index 6aef9b9..c9897ee 100644
--- a/serial_darwin.go
+++ b/serial_posix.go
@@ -1,3 +1,5 @@
+// +build !windows
+
 package serial
 
 // #include <termios.h>
diff --git a/serial_windows.go b/serial_windows.go
index efe4a3b..f47aacc 100644
--- a/serial_windows.go
+++ b/serial_windows.go
@@ -1,3 +1,5 @@
+// +build windows
+
 package serial
 
 import (