diff --git a/engine/src/witness/btc/smart_contract.rs b/engine/src/witness/btc/smart_contract.rs
index 950bbefa94..76f2ddf387 100644
--- a/engine/src/witness/btc/smart_contract.rs
+++ b/engine/src/witness/btc/smart_contract.rs
@@ -168,7 +168,7 @@ mod tests {
 	const MOCK_DOT_ADDRESS: [u8; 32] = [9u8; 32];
 
 	const MOCK_SWAP_PARAMS: UtxoEncodedData = UtxoEncodedData {
-		output_asset: Asset::Btc,
+		output_asset: Asset::Dot,
 		output_address: EncodedAddress::Dot(MOCK_DOT_ADDRESS),
 		parameters: SharedCfParameters {
 			retry_duration: 5,
diff --git a/state-chain/chains/src/btc/smart_contract_encoding.rs b/state-chain/chains/src/btc/smart_contract_encoding.rs
index 383a04d293..82add655a3 100644
--- a/state-chain/chains/src/btc/smart_contract_encoding.rs
+++ b/state-chain/chains/src/btc/smart_contract_encoding.rs
@@ -2,6 +2,7 @@ use crate::address::EncodedAddress;
 use cf_primitives::{Asset, AssetAmount, ForeignChain};
 use codec::{Decode, Encode, MaxEncodedLen};
 use scale_info::TypeInfo;
+use sp_std::vec::Vec;
 
 use super::{BitcoinOp, BitcoinScript};