diff --git a/zetaclient/bitcoin/bitcoin_signer_test.go b/zetaclient/bitcoin/bitcoin_signer_test.go
index 1c82bd47ae..ae1d3a2f1a 100644
--- a/zetaclient/bitcoin/bitcoin_signer_test.go
+++ b/zetaclient/bitcoin/bitcoin_signer_test.go
@@ -421,7 +421,7 @@ func TestP2WPHSizeBreakdown(t *testing.T) {
 }
 
 // helper function to create a new BitcoinChainClient
-func createTestClient(t *testing.T) *ChainClient {
+func createTestClient(t *testing.T) *BTCChainClient {
 	skHex := "7b8507ba117e069f4a3f456f505276084f8c92aee86ac78ae37b4d1801d35fa8"
 	privateKey, err := crypto.HexToECDSA(skHex)
 	require.Nil(t, err)
@@ -431,7 +431,7 @@ func createTestClient(t *testing.T) *ChainClient {
 	tssAddress := tss.BTCAddressWitnessPubkeyHash().EncodeAddress()
 
 	// Create BitcoinChainClient
-	client := &ChainClient{
+	client := &BTCChainClient{
 		Tss:               tss,
 		Mu:                &sync.Mutex{},
 		includedTxResults: make(map[string]*btcjson.GetTransactionResult),
@@ -446,7 +446,7 @@ func createTestClient(t *testing.T) *ChainClient {
 	return client
 }
 
-func mineTxNSetNonceMark(ob *ChainClient, nonce uint64, txid string, preMarkIndex int) {
+func mineTxNSetNonceMark(ob *BTCChainClient, nonce uint64, txid string, preMarkIndex int) {
 	// Mine transaction
 	outTxID := ob.GetTxID(nonce)
 	ob.includedTxResults[outTxID] = &btcjson.GetTransactionResult{TxID: txid}