diff --git a/include/X11/Xw32defs.h b/include/X11/Xw32defs.h
index 683b588..db1eabd 100644
--- a/include/X11/Xw32defs.h
+++ b/include/X11/Xw32defs.h
@@ -27,7 +27,6 @@ typedef char *caddr_t;
 #  define execve	 _execve
 #  define execvp	 _execvp
 #  define execvpe  _execvpe
-#  define fdopen	  _fdopen
 #  define fileno	  _fileno
 #  define fstat	 _fstat
 #  define getcwd	_getcwd
@@ -72,8 +71,8 @@ typedef char *caddr_t;
 #  define S_IEXEC  _S_IEXEC
 
 #  define	F_OK	0
-#  define	X_OK	1
 #  define	W_OK	2
 #  define	R_OK	4
+#  define	X_OK	R_OK
 # endif /* __GNUC__ */
 #endif