diff --git a/scripts/gen_idt/gen_idt.c b/scripts/gen_idt/gen_idt.c
index 77ba79e3a6d..11ccf1132e6 100644
--- a/scripts/gen_idt/gen_idt.c
+++ b/scripts/gen_idt/gen_idt.c
@@ -51,7 +51,7 @@
 /* This comes from the shared directory */
 #include "idtEnt.h"
 
-#if !defined(_WIN32) && !defined(__CYGWIN32__) && !defined(__WIN32__)
+#if !defined(_WIN32) && !defined(__CYGWIN__) && !defined(__WIN32__)
   #define O_BINARY 0
 #endif