diff --git a/ssh.c b/ssh.c
index fa9bc745..e6b2d6be 100644
--- a/ssh.c
+++ b/ssh.c
@@ -1762,6 +1762,8 @@ static int s_write(Ssh ssh, void *data, int len)
     if (ssh->logctx)
 	log_packet(ssh->logctx, PKT_OUTGOING, -1, NULL, data, len,
 		   0, NULL, NULL);
+    if (!ssh->s)
+        return 0;
     return sk_write(ssh->s, (char *)data, len);
 }