diff --git a/packages/widget/src/controllers/transfers/evm/build.ts b/packages/widget/src/controllers/transfers/evm/build.ts
index e1bf0d9b..8eb55928 100644
--- a/packages/widget/src/controllers/transfers/evm/build.ts
+++ b/packages/widget/src/controllers/transfers/evm/build.ts
@@ -13,6 +13,13 @@ import type { UnsignedTransaction, BigNumber } from 'ethers';
 import { constants, utils } from 'ethers';
 import type { Eip1193Provider } from '../../../interfaces';
 
+type BuildEvmFungibleTransactionsArtifacts = {
+  pendingEvmApprovalTransactions: UnsignedTransaction[];
+  pendingTransferTransaction: UnsignedTransaction;
+  fee: EvmFee;
+  resourceAmount: BigNumber;
+};
+
 /**
  * @dev If we did proper validation this shouldn't throw.
  * Not sure how to handle if it throws :shrug:
@@ -42,12 +49,7 @@ export async function buildEvmFungibleTransactions({
   pendingTransferTransaction: UnsignedTransaction;
   sourceNetwork: Domain | null;
   fee: EvmFee;
-}): Promise<{
-  pendingEvmApprovalTransactions: UnsignedTransaction[];
-  pendingTransferTransaction: UnsignedTransaction;
-  fee: EvmFee;
-  resourceAmount: BigNumber;
-}> {
+}): Promise<BuildEvmFungibleTransactionsArtifacts> {
   const evmTransfer = new EVMAssetTransfer();
   await evmTransfer.init(new Web3Provider(provider, providerChainId), env);
 
diff --git a/packages/widget/src/controllers/transfers/evm/execute.ts b/packages/widget/src/controllers/transfers/evm/execute.ts
index 7f9c2e8b..edd0763c 100644
--- a/packages/widget/src/controllers/transfers/evm/execute.ts
+++ b/packages/widget/src/controllers/transfers/evm/execute.ts
@@ -2,9 +2,9 @@ import {
   Web3Provider,
   type TransactionRequest
 } from '@ethersproject/providers';
-import type { UnsignedTransaction } from 'ethers';
+import type { PopulatedTransaction } from 'ethers';
 import type { Eip1193Provider } from '../../../interfaces';
-import { estimateEvmGas } from '../../../utils/gas';
+import { estimateEvmTransactionsGasCost } from '../../../utils/gas';
 import {
   FungibleTransferState,
   type FungibleTokenTransferController
@@ -38,11 +38,11 @@ export async function executeNextEvmTransaction(
         this.pendingTransferTransaction
       );
 
-      this.estimatedGas = await estimateEvmGas(
+      this.estimatedGas = await estimateEvmTransactionsGasCost(
         this.sourceNetwork?.chainId as number,
         this.walletContext.value?.evmWallet?.provider as Eip1193Provider,
         this.walletContext.value?.evmWallet?.address as string,
-        transactions as UnsignedTransaction[]
+        transactions as PopulatedTransaction[]
       );
     } catch (e) {
       console.log(e);
@@ -51,11 +51,11 @@ export async function executeNextEvmTransaction(
       this.waitingUserConfirmation = false;
       this.waitingTxExecution = false;
       this.host.requestUpdate();
-      await estimateEvmGas(
+      await estimateEvmTransactionsGasCost(
         this.sourceNetwork?.chainId as number,
         this.walletContext.value?.evmWallet?.provider as Eip1193Provider,
         this.walletContext.value?.evmWallet?.address as string,
-        transactions as UnsignedTransaction[]
+        transactions as PopulatedTransaction[]
       );
     }
     return;
diff --git a/packages/widget/src/controllers/transfers/fungible-token-transfer.ts b/packages/widget/src/controllers/transfers/fungible-token-transfer.ts
index bc8bef28..f7804a93 100644
--- a/packages/widget/src/controllers/transfers/fungible-token-transfer.ts
+++ b/packages/widget/src/controllers/transfers/fungible-token-transfer.ts
@@ -14,7 +14,11 @@ import {
 } from '@buildwithsygma/sygma-sdk-core';
 import { ContextConsumer } from '@lit/context';
 import { ethers } from 'ethers';
-import type { UnsignedTransaction, BigNumber } from 'ethers';
+import type {
+  UnsignedTransaction,
+  BigNumber,
+  PopulatedTransaction
+} from 'ethers';
 import type { ReactiveController, ReactiveElement } from 'lit';
 import type { SubmittableExtrinsic } from '@polkadot/api/types';
 import type { ApiPromise, SubmittableResult } from '@polkadot/api';
@@ -29,7 +33,10 @@ import { validateAddress } from '../../utils';
 import type { Eip1193Provider } from '../../interfaces';
 import { SdkInitializedEvent } from '../../interfaces';
 import { substrateProviderContext } from '../../context/wallet';
-import { estimateEvmGas, estimateSubstrateGas } from '../../utils/gas';
+import {
+  estimateEvmTransactionsGasCost,
+  estimateSubstrateGas
+} from '../../utils/gas';
 import { buildEvmFungibleTransactions, executeNextEvmTransaction } from './evm';
 import {
   buildSubstrateFungibleTransactions,
@@ -77,7 +84,6 @@ export class FungibleTokenTransferController implements ReactiveController {
   public estimatedGas: BigNumber | undefined;
 
   //Evm transfer
-  protected buildEvmTransactions = buildEvmFungibleTransactions;
   protected executeNextEvmTransaction = executeNextEvmTransaction;
   protected pendingEvmApprovalTransactions: UnsignedTransaction[] = [];
   public pendingTransferTransaction?:
@@ -548,7 +554,7 @@ export class FungibleTokenTransferController implements ReactiveController {
           this.isBuildingTransactions = true;
 
           try {
-            const evmTransferArtifacts = await this.buildEvmTransactions({
+            const evmTransferArtifacts = await buildEvmFungibleTransactions({
               address: address!,
               chainId: this.destinationNetwork!.chainId,
               destinationAddress: this.destinationAddress!,
@@ -580,11 +586,11 @@ export class FungibleTokenTransferController implements ReactiveController {
               transactions.push(this.pendingTransferTransaction);
             }
 
-            this.estimatedGas = await estimateEvmGas(
+            this.estimatedGas = await estimateEvmTransactionsGasCost(
               this.sourceNetwork?.chainId as number,
               this.walletContext.value?.evmWallet?.provider as Eip1193Provider,
               this.walletContext.value?.evmWallet?.address as string,
-              transactions
+              transactions as PopulatedTransaction[]
             );
           } catch (error) {
             console.error('Error Building transactions: ', error);
diff --git a/packages/widget/src/controllers/transfers/substrate/build.ts b/packages/widget/src/controllers/transfers/substrate/build.ts
index 37591a01..c7260825 100644
--- a/packages/widget/src/controllers/transfers/substrate/build.ts
+++ b/packages/widget/src/controllers/transfers/substrate/build.ts
@@ -5,6 +5,12 @@ import type { ApiPromise } from '@polkadot/api';
 import type { BigNumber } from 'ethers';
 import type { SubstrateTransaction } from '../fungible-token-transfer';
 
+type BuildSubstrateFungibleTransactionsArtifacts = {
+  pendingTransferTransaction: SubstrateTransaction;
+  resourceAmount: BigNumber;
+  fee: SubstrateFee;
+};
+
 export async function buildSubstrateFungibleTransactions({
   address,
   substrateProvider,
@@ -25,11 +31,7 @@ export async function buildSubstrateFungibleTransactions({
   resourceAmount: BigNumber;
   pendingTransferTransaction: SubstrateTransaction;
   fee: SubstrateFee;
-}): Promise<{
-  pendingTransferTransaction: SubstrateTransaction;
-  resourceAmount: BigNumber;
-  fee: SubstrateFee;
-}> {
+}): Promise<BuildSubstrateFungibleTransactionsArtifacts> {
   const substrateTransfer = new SubstrateAssetTransfer();
   await substrateTransfer.init(substrateProvider, env);
 
diff --git a/packages/widget/src/utils/gas.ts b/packages/widget/src/utils/gas.ts
index c1dba696..2ecb140e 100644
--- a/packages/widget/src/utils/gas.ts
+++ b/packages/widget/src/utils/gas.ts
@@ -32,22 +32,6 @@ export async function estimateEvmTransactionsGasCost(
   return gasPrice.mul(cost);
 }
 
-export async function estimateEvmGas(
-  chainId: number,
-  provider: Eip1193Provider,
-  address: string,
-  transactions: UnsignedTransaction[]
-): Promise<BigNumber> {
-  const estimatedGas = await estimateEvmTransactionsGasCost(
-    chainId,
-    provider,
-    address,
-    transactions as PopulatedTransaction[]
-  );
-
-  return estimatedGas;
-}
-
 export async function estimateSubstrateGas(
   signerAddress: string,
   pendingTransferTransaction: SubstrateTransaction
diff --git a/packages/widget/src/utils/index.ts b/packages/widget/src/utils/index.ts
index 7d76017b..08fec79e 100644
--- a/packages/widget/src/utils/index.ts
+++ b/packages/widget/src/utils/index.ts
@@ -87,7 +87,7 @@ export const validateAddress = (
 
 export const debounceAmountChange = <Args extends string>(
   cb: (args: Args) => void,
-  delay?: number
+  delay: number
 ): ((value: Args) => void) => {
   let timeout: NodeJS.Timeout;
   return (args: Args): void => {