diff --git a/packages/assets-controllers/src/TokenRatesController.ts b/packages/assets-controllers/src/TokenRatesController.ts
index 0f0fa9cd327..71d4d8b7d24 100644
--- a/packages/assets-controllers/src/TokenRatesController.ts
+++ b/packages/assets-controllers/src/TokenRatesController.ts
@@ -555,7 +555,7 @@ export class TokenRatesController extends StaticIntervalPollingControllerV1<
       (obj, [tokenAddress, token]) => {
         obj = {
           ...obj,
-          [tokenAddress.toLowerCase()]: { ...token },
+          [tokenAddress]: { ...token },
         };
 
         return obj;