diff --git a/legacy/eet/src/bin/eet_main.c b/legacy/eet/src/bin/eet_main.c
index e55a300d90..a433bc5eca 100644
--- a/legacy/eet/src/bin/eet_main.c
+++ b/legacy/eet/src/bin/eet_main.c
@@ -5,9 +5,10 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#ifndef _MSC_VER
+
+#ifdef HAVE_UNISTD_H
 # include <unistd.h>
-#endif /* ifndef _MSC_VER */
+#endif /* ifdef HAVE_UNISTD_H */
 
 #ifdef HAVE_EVIL
 # include <Evil.h>