1 files changed, 2 insertions, 0 deletions

diff --git a/openbsd-compat/port-tun.h b/openbsd-compat/port-tun.h
index 9f7a98614..c53df01fc 100644
--- a/openbsd-compat/port-tun.h
+++ b/openbsd-compat/port-tun.h
@@ -17,6 +17,8 @@
 #ifndef _PORT_TUN_H
 #define _PORT_TUN_H
 
+struct Channel;
+
 #if defined(SSH_TUN_LINUX) || defined(SSH_TUN_FREEBSD)
 # define CUSTOM_SYS_TUN_OPEN
 int       sys_tun_open(int, int);