diff --git a/lightningd/peer_htlcs.c b/lightningd/peer_htlcs.c
index 70f46731d..f295937bc 100644
--- a/lightningd/peer_htlcs.c
+++ b/lightningd/peer_htlcs.c
@@ -349,6 +349,8 @@ static void rcvd_htlc_reply(struct subd *subd, const u8 *msg, const int *fds,
 		} else
 			local_fail_htlc(hout->in, failure_code,
 					hout->key.peer->scid);
+		/* Prevent hout from being failed twice. */
+		tal_del_destructor(hout, hout_subd_died);
 		tal_free(hout);
 		return;
 	}