diff --git a/lightningd/lightningd.c b/lightningd/lightningd.c
index 65140dbaf..916e3132d 100644
--- a/lightningd/lightningd.c
+++ b/lightningd/lightningd.c
@@ -130,6 +130,7 @@ static struct lightningd *new_lightningd(const tal_t *ctx)
 	ld->dstate.announce = NULL;
 	ld->topology = ld->dstate.topology = new_topology(ld, ld->log);
 	ld->bitcoind = ld->dstate.bitcoind = new_bitcoind(ld, ld->log);
+	ld->bitcoind->testmode = ld->dstate.testnet?BITCOIND_TESTNET:BITCOIND_MAINNET;
 
 	/* FIXME: Move into invoice daemon. */
 	ld->dstate.invoices = invoices_init(&ld->dstate);