diff --git a/packages/bundler-sdk-viem/src/operations.ts b/packages/bundler-sdk-viem/src/operations.ts
index 160c7c82..07b7bc68 100644
--- a/packages/bundler-sdk-viem/src/operations.ts
+++ b/packages/bundler-sdk-viem/src/operations.ts
@@ -428,12 +428,12 @@ export const populateSubBundle = (
 
   const requirementOperations =
     getRequirementOperations?.(requiredTokenAmounts) ?? [];
-  requiredTokenAmounts = data.simulateWithUnlimitedBalances(
+  ({ requiredTokenAmounts } = data.simulateWithUnlimitedBalances(
     requirementOperations
       .concat(allOperations)
       .map((operation) => getSimulatedBundlerOperation(operation)),
     [bundler],
-  ).requiredTokenAmounts;
+  ));
 
   // Append required input transfers.
   requiredTokenAmounts.forEach(({ token, required }) => {
diff --git a/packages/simulation-sdk/src/SimulationState.ts b/packages/simulation-sdk/src/SimulationState.ts
index 88a669d7..38f7af0e 100644
--- a/packages/simulation-sdk/src/SimulationState.ts
+++ b/packages/simulation-sdk/src/SimulationState.ts
@@ -673,7 +673,7 @@ export class SimulationState implements InputSimulationState {
     const bundlerTokenDiffs = holders
       .flatMap((holder) =>
         keys(virtualBundlerData.holdings[holder]).map(
-          (token) => [holder, token] as [Address, Address],
+          (token) => [holder, token] as const,
         ),
       )
       .map(([holder, token]) => ({