diff --git a/packages/bcp/src/decode.spec.ts b/packages/bcp/src/decode.spec.ts
index 80f9a531..cdfa1129 100644
--- a/packages/bcp/src/decode.spec.ts
+++ b/packages/bcp/src/decode.spec.ts
@@ -158,7 +158,9 @@ describe("decode", () => {
           ],
         },
       };
-      expect(parseMsg(msg, defaultMemo, testdata.chainId, defaultTokens)).toEqual(defaultSendTransaction);
+      expect(parseMsg(msg, defaultMemo, testdata.chainId, defaultTokens, defaultErc20Tokens)).toEqual(
+        defaultSendTransaction,
+      );
     });
 
     it("works for ERC20 send transaction", () => {
diff --git a/packages/bcp/src/decode.ts b/packages/bcp/src/decode.ts
index b28bbde5..3279c9d9 100644
--- a/packages/bcp/src/decode.ts
+++ b/packages/bcp/src/decode.ts
@@ -77,7 +77,7 @@ export function parseMsg(
   memo: string | undefined,
   chainId: ChainId,
   tokens: BankTokens,
-  erc20Tokens: readonly Erc20Token[] = [],
+  erc20Tokens: readonly Erc20Token[],
 ): UnsignedTransaction {
   if (types.isMsgSend(msg)) {
     if (msg.value.amount.length !== 1) {
diff --git a/packages/bcp/types/decode.d.ts b/packages/bcp/types/decode.d.ts
index 35c99db4..b2fac2c7 100644
--- a/packages/bcp/types/decode.d.ts
+++ b/packages/bcp/types/decode.d.ts
@@ -24,7 +24,7 @@ export declare function parseMsg(
   memo: string | undefined,
   chainId: ChainId,
   tokens: BankTokens,
-  erc20Tokens?: readonly Erc20Token[],
+  erc20Tokens: readonly Erc20Token[],
 ): UnsignedTransaction;
 export declare function parseFee(fee: types.StdFee, tokens: BankTokens): Fee;
 export declare function parseUnsignedTx(