diff --git a/AltairZ80/s100_tarbell.c b/AltairZ80/s100_tarbell.c
index 61564582..c789c4de 100644
--- a/AltairZ80/s100_tarbell.c
+++ b/AltairZ80/s100_tarbell.c
@@ -17,10 +17,6 @@
 #include "altairz80_defs.h"
 #include "sim_imd.h"
 
-#if defined (_WIN32)
-#include <windows.h>
-#endif
-
 #ifdef DBG_MSG
 #define DBG_PRINT(args) sim_printf args
 #else