--- IO-AIO/AIO.xs	2005/07/31 19:04:45	1.19
+++ IO-AIO/AIO.xs	2005/07/31 19:08:39	1.20
@@ -1,6 +1,4 @@
-#ifndef _REENTRANT
-# define _REENTRANT 1
-#endif
+#define _REENTRANT 1
 #include <errno.h>
 
 #include "EXTERN.h"