--- IO-AIO/AIO.xs	2010/05/09 20:43:28	1.166
+++ IO-AIO/AIO.xs	2010/05/09 20:49:52	1.167
@@ -498,7 +498,7 @@
             }
             break;
 
-          case EIO_DUP2:
+          case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), su fudge result value */
             if (req->result > 0)
               SvIV_set (sv_result, 0);
             /* FALLTHROUGH */