--- IO-AIO/AIO.xs	2012/10/11 03:20:52	1.224
+++ IO-AIO/AIO.xs	2012/12/29 09:35:39	1.225
@@ -155,7 +155,7 @@
 # define minor(dev) ((dev) & 0xff)
 #endif
 
-#ifndef PAGESIZE
+#if PAGESIZE <= 0
 # define PAGESIZE sysconf (_SC_PAGESIZE)
 #endif