1 files changed, 1 insertions, 1 deletions

diff --git a/openbsd-compat/port-tun.h b/openbsd-compat/port-tun.h
index 103514370..926bc93e1 100644
--- a/openbsd-compat/port-tun.h
+++ b/openbsd-compat/port-tun.h
@@ -22,7 +22,7 @@ struct ssh;
 
 #if defined(SSH_TUN_LINUX) || defined(SSH_TUN_FREEBSD)
 # define CUSTOM_SYS_TUN_OPEN
-int       sys_tun_open(int, int);
+int       sys_tun_open(int, int, char **);
 #endif
 
 #if defined(SSH_TUN_COMPAT_AF) || defined(SSH_TUN_PREPEND_AF)