diff --git a/lib/entities/QuoteResponse.ts b/lib/entities/QuoteResponse.ts
index 4ca8394b..62b986b6 100644
--- a/lib/entities/QuoteResponse.ts
+++ b/lib/entities/QuoteResponse.ts
@@ -2,9 +2,9 @@ import { TradeType } from '@uniswap/sdk-core';
 import { BigNumber } from 'ethers';
 import { v4 as uuidv4 } from 'uuid';
 
+import { QuoteRequestData } from '.';
 import { PostQuoteResponse, RfqResponse, RfqResponseJoi } from '../handlers/quote/schema';
 import { currentTimestampInMs, timestampInMstoSeconds } from '../util/time';
-import { QuoteRequestData } from '.';
 
 export interface QuoteResponseData
   extends Omit<QuoteRequestData, 'tokenInChainId' | 'tokenOutChainId' | 'amount' | 'type' | 'numOutputs'> {
@@ -61,7 +61,10 @@ export class QuoteResponse implements QuoteResponseData {
       };
     }
 
-    if (request.tokenIn !== data.tokenIn || request.tokenOut !== data.tokenOut) {
+    if (
+      request.tokenIn.toLowerCase() !== data.tokenIn.toLowerCase() ||
+      request.tokenOut.toLowerCase() !== data.tokenOut.toLowerCase()
+    ) {
       validationError = {
         message: `RFQ response token mismatch: request tokenIn: ${request.tokenIn} tokenOut: ${request.tokenOut} response tokenIn: ${data.tokenIn} tokenOut: ${data.tokenOut}`,
         value: data,
diff --git a/test/entities/QuoteResponse.test.ts b/test/entities/QuoteResponse.test.ts
index 46b7c03e..5567f333 100644
--- a/test/entities/QuoteResponse.test.ts
+++ b/test/entities/QuoteResponse.test.ts
@@ -73,6 +73,23 @@ describe('QuoteRequest', () => {
       expect(response.validationError).toBe(undefined);
     });
 
+    it('fromRFQ with valid response - allow checksumed', async () => {
+      const response = QuoteResponse.fromRFQ(
+        quoteRequest,
+        {
+          chainId: CHAIN_ID,
+          requestId: REQUEST_ID,
+          tokenIn: TOKEN_IN.toLowerCase(),
+          amountIn: parseEther('1').toString(),
+          tokenOut: TOKEN_OUT.toLowerCase(),
+          amountOut: parseEther('1').toString(),
+          quoteId: QUOTE_ID,
+        },
+        TradeType.EXACT_INPUT
+      );
+      expect(response.validationError).toBe(undefined);
+    });
+
     it('fromRFQ with invalid response - wrong type amountIn', async () => {
       const invalidResponse = {
         chainId: CHAIN_ID,