diff --git a/src/cat/LuaScriptInterface.cpp b/src/cat/LuaScriptInterface.cpp
index 7faf943a2..869d717a2 100644
--- a/src/cat/LuaScriptInterface.cpp
+++ b/src/cat/LuaScriptInterface.cpp
@@ -39,7 +39,7 @@
 #include "LuaSlider.h"
 #include "LuaProgressBar.h"
 
-#ifdef __unix__
+#ifndef WIN
 #include <unistd.h>
 #endif