diff --git a/packages/asset-buyer/src/quote_consumers/exchange_swap_quote_consumer.ts b/packages/asset-buyer/src/quote_consumers/exchange_swap_quote_consumer.ts
index 7f17b08f43..9902a53ad1 100644
--- a/packages/asset-buyer/src/quote_consumers/exchange_swap_quote_consumer.ts
+++ b/packages/asset-buyer/src/quote_consumers/exchange_swap_quote_consumer.ts
@@ -39,10 +39,10 @@ export class ExchangeSwapQuoteConsumer implements SwapQuoteConsumer<ExchangeMark
         });
     }
 
-    public getCalldataOrThrow(quote: SwapQuote, opts: Partial<SwapQuoteGetOutputOpts>): CalldataInfo {
+    public async getCalldataOrThrowAsync(quote: SwapQuote, opts: Partial<SwapQuoteGetOutputOpts>): Promise<CalldataInfo> {
         assert.isValidSwapQuote('quote', quote);
 
-        const { params, to, ethAmount, methodAbi } = this.getSmartContractParamsOrThrow(quote, opts);
+        const { params, to, ethAmount, methodAbi } = await this.getSmartContractParamsOrThrowAsync(quote, opts);
         const abiEncoder = new AbiEncoder.Method(methodAbi);
         const args = [
             params.orders,
@@ -58,7 +58,7 @@ export class ExchangeSwapQuoteConsumer implements SwapQuoteConsumer<ExchangeMark
         };
     }
 
-    public getSmartContractParamsOrThrow(quote: SwapQuote, opts: Partial<SwapQuoteGetOutputOpts>): SmartContractParamsInfo<ExchangeMarketBuySmartContractParams> {
+    public async getSmartContractParamsOrThrowAsync(quote: SwapQuote, opts: Partial<SwapQuoteGetOutputOpts>): Promise<SmartContractParamsInfo<ExchangeMarketBuySmartContractParams>> {
         assert.isValidSwapQuote('quote', quote);
 
         const { orders, makerAssetFillAmount } = quote;
diff --git a/packages/asset-buyer/src/quote_consumers/forwarder_swap_quote_consumer.ts b/packages/asset-buyer/src/quote_consumers/forwarder_swap_quote_consumer.ts
index fc540c7214..dd07c35cc4 100644
--- a/packages/asset-buyer/src/quote_consumers/forwarder_swap_quote_consumer.ts
+++ b/packages/asset-buyer/src/quote_consumers/forwarder_swap_quote_consumer.ts
@@ -19,7 +19,7 @@ import {
 import { affiliateFeeUtils } from '../utils/affiliate_fee_utils';
 import { assert } from '../utils/assert';
 import { assetDataUtils } from '../utils/asset_data_utils';
-import { SwapQuoteConsumerUtils } from '../utils/swap_quote_consumer_utils';
+import { swapQuoteConsumerUtils } from '../utils/swap_quote_consumer_utils';
 import { utils } from '../utils/utils';
 
 export class ForwarderSwapQuoteConsumer implements SwapQuoteConsumer<ForwarderMarketBuySmartContractParams> {
@@ -165,7 +165,7 @@ export class ForwarderSwapQuoteConsumer implements SwapQuoteConsumer<ForwarderMa
 
         const { orders, feeOrders, makerAssetFillAmount, worstCaseQuoteInfo } = swapQuoteWithAffiliateFee;
 
-        const finalTakerAddress = await SwapQuoteConsumerUtils.getTakerAddressOrThrowAsync(this.provider, opts);
+        const finalTakerAddress = await swapQuoteConsumerUtils.getTakerAddressOrThrowAsync(this.provider, opts);
 
         try {
             const txHash = await this._contractWrappers.forwarder.marketBuyOrdersWithEthAsync(