1 files changed, 2 insertions, 0 deletions

diff --git a/channels.h b/channels.h
index ffd580727..4fab9d7c4 100644
--- a/channels.h
+++ b/channels.h
@@ -103,7 +103,9 @@ struct Channel {
         int     sock;           /* sock fd */
         int     ctl_chan;       /* control channel (multiplexed connections) */
         int     isatty;         /* rfd is a tty */
+#ifdef _AIX
         int     wfd_isatty;     /* wfd is a tty */
+#endif
         int     client_tty;     /* (client) TTY has been requested */
         int     force_drain;    /* force close on iEOF */
         time_t  notbefore;      /* Pause IO until deadline (time_t) */