diff --git a/xtrn/sdk/xsdk.h b/xtrn/sdk/xsdk.h
index 4c5def9bd648c8fd217f3548e311ee57558e935a..71aee8315bbd6b8cbc7f407a3989346ff7b4d597 100644
--- a/xtrn/sdk/xsdk.h
+++ b/xtrn/sdk/xsdk.h
@@ -46,9 +46,11 @@
 	#include <io.h>
 	#include <dos.h>
 	#include <share.h>
-	#include <windows.h>
 	#include <conio.h>
 #endif
+#ifdef _WIN32
+	#include <windows.h>
+#endif
 #include <time.h>
 #include <ctype.h>
 #include <stdio.h>