diff --git a/bitcoin/chainparams.c b/bitcoin/chainparams.c
index 5e3c17783..35193cfe4 100644
--- a/bitcoin/chainparams.c
+++ b/bitcoin/chainparams.c
@@ -15,7 +15,7 @@ const struct chainparams networks[] = {
      .testnet = false},
     {.index = 1,
      .network_name = "regtest",
-     .bip173_name = "tb",
+     .bip173_name = "bcrt",
      .genesis_blockhash = {{{.u.u8 = {0x06, 0x22, 0x6e, 0x46, 0x11, 0x1a, 0x0b, 0x59, 0xca, 0xaf, 0x12, 0x60, 0x43, 0xeb, 0x5b, 0xbf, 0x28, 0xc3, 0x4f, 0x3a, 0x5e, 0x33, 0x2a, 0x1f, 0xc7, 0xb2, 0xb7, 0x3c, 0xf1, 0x88, 0x91, 0x0f}}}},
      .rpc_port = 18332,
      .cli = "bitcoin-cli",