diff --git a/packages/asset-swapper/src/utils/quote_requestor.ts b/packages/asset-swapper/src/utils/quote_requestor.ts
index 8dd01a51fb..1c87ca426c 100644
--- a/packages/asset-swapper/src/utils/quote_requestor.ts
+++ b/packages/asset-swapper/src/utils/quote_requestor.ts
@@ -117,7 +117,7 @@ export class QuoteRequestor {
         makerAssetData: string,
         takerAssetData: string,
         assetFillAmount: BigNumber,
-        comparisonPrice?: BigNumber | undefined,
+        comparisonPrice?: BigNumber,
     ): TakerRequestQueryParams {
         const { buyAmountBaseUnits, sellAmountBaseUnits, ...rest } = inferQueryParams(
             marketOperation,