diff --git a/wallet/db.c b/wallet/db.c
index f81c75449..ac847660d 100644
--- a/wallet/db.c
+++ b/wallet/db.c
@@ -96,6 +96,8 @@ static struct migration dbmigrations[] = {
      NULL},
     {SQL("CREATE TABLE channels ("
 	 "  id BIGSERIAL," /* chan->id */
+	 /* FIXME: We deliberately never delete a peer with channels, so this constraint is
+	  * unnecessary! */
 	 "  peer_id BIGINT REFERENCES peers(id) ON DELETE CASCADE,"
 	 "  short_channel_id TEXT,"
 	 "  channel_config_local BIGINT,"