--- IO-AIO/AIO.xs	2009/04/21 20:12:56	1.139
+++ IO-AIO/AIO.xs	2009/06/03 12:24:49	1.140
@@ -526,6 +526,7 @@
 	stash = gv_stashpv ("IO::AIO", 1);
 
         newCONSTSUB (stash, "EXDEV",    newSViv (EXDEV));
+        newCONSTSUB (stash, "ENOSYS",   newSViv (ENOSYS));
         newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
         newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
         newCONSTSUB (stash, "O_CREAT",  newSViv (O_CREAT));