diff --git a/src/SmartTransactionsController.test.ts b/src/SmartTransactionsController.test.ts
index 998fff44..67f19604 100644
--- a/src/SmartTransactionsController.test.ts
+++ b/src/SmartTransactionsController.test.ts
@@ -1,5 +1,6 @@
-import { convertHexToDecimal } from '@metamask/controller-utils';
+import { NetworkType, convertHexToDecimal } from '@metamask/controller-utils';
 import type { NetworkState } from '@metamask/network-controller';
+import { NetworkStatus } from '@metamask/network-controller';
 import nock from 'nock';
 import * as sinon from 'sinon';
 
@@ -9,7 +10,7 @@ import { API_BASE_URL, CHAIN_IDS } from './constants';
 import SmartTransactionsController, {
   DEFAULT_INTERVAL,
 } from './SmartTransactionsController';
-import { flushPromises, advanceTime } from './test-helpers';
+import { advanceTime, flushPromises } from './test-helpers';
 import type { SmartTransaction, UnsignedTransaction } from './types';
 import { SmartTransactionStatuses } from './types';
 import * as utils from './utils';
@@ -308,12 +309,47 @@ const defaultState = {
   },
 };
 
+const mockProvider = {
+  sendAsync: jest.fn(),
+};
+
+const mockProviderConfig = {
+  chainId: '0x1' as `0x${string}`,
+  provider: mockProvider,
+  type: NetworkType.mainnet,
+  ticker: 'ticker',
+};
+
+const mockNetworkState = {
+  providerConfig: mockProviderConfig,
+  selectedNetworkClientId: 'id',
+  networkConfigurations: {
+    id: {
+      id: 'id',
+      rpcUrl: 'string',
+      chainId: '0x1' as `0x${string}`,
+      ticker: 'string',
+    },
+  },
+  networksMetadata: {
+    id: {
+      EIPS: {
+        1155: true,
+      },
+      status: NetworkStatus.Available,
+    },
+  },
+};
+
 describe('SmartTransactionsController', () => {
   let smartTransactionsController: SmartTransactionsController;
   let networkListener: (networkState: NetworkState) => void;
+
   beforeEach(() => {
     smartTransactionsController = new SmartTransactionsController({
-      onNetworkStateChange: (listener) => {
+      onNetworkStateChange: (
+        listener: (networkState: NetworkState) => void,
+      ) => {
         networkListener = listener;
       },
       getNonceLock: jest.fn(() => {
@@ -346,6 +382,8 @@ describe('SmartTransactionsController', () => {
     });
     // eslint-disable-next-line jest/prefer-spy-on
     smartTransactionsController.subscribe = jest.fn();
+
+    networkListener(mockNetworkState);
   });
 
   afterEach(async () => {
diff --git a/src/SmartTransactionsController.ts b/src/SmartTransactionsController.ts
index 6e2360d1..5cfa3248 100644
--- a/src/SmartTransactionsController.ts
+++ b/src/SmartTransactionsController.ts
@@ -1,18 +1,18 @@
 // eslint-disable-next-line import/no-nodejs-modules
 import { hexlify } from '@ethersproject/bytes';
 import type { BaseConfig, BaseState } from '@metamask/base-controller';
-import { safelyExecute, query } from '@metamask/controller-utils';
+import { query, safelyExecute } from '@metamask/controller-utils';
 import type { Provider } from '@metamask/eth-query';
 import EthQuery from '@metamask/eth-query';
 import type {
-  NetworkState,
-  NetworkController,
   NetworkClientId,
+  NetworkController,
+  NetworkState,
 } from '@metamask/network-controller';
 import { StaticIntervalPollingControllerV1 } from '@metamask/polling-controller';
 import { BigNumber } from 'bignumber.js';
 // eslint-disable-next-line import/no-nodejs-modules
-import { EventEmitter } from 'events';
+import EventEmitter from 'events';
 import cloneDeep from 'lodash/cloneDeep';
 
 import {
@@ -21,31 +21,33 @@ import {
   MetaMetricsEventName,
 } from './constants';
 import type {
-  SmartTransaction,
-  SignedTransaction,
-  SignedCanceledTransaction,
-  UnsignedTransaction,
-  SmartTransactionsStatus,
   Fees,
-  IndividualTxFees,
   Hex,
+  IndividualTxFees,
+  SignedCanceledTransaction,
+  SignedTransaction,
+  SmartTransaction,
+  SmartTransactionsStatus,
+  UnsignedTransaction,
 } from './types';
 import { APIType, SmartTransactionStatuses } from './types';
 import {
-  getAPIRequestURL,
-  isSmartTransactionPending,
   calculateStatus,
-  snapshotFromTxMeta,
-  replayHistory,
   generateHistoryEntry,
+  getAPIRequestURL,
   getStxProcessingTime,
   handleFetch,
-  isSmartTransactionCancellable,
   incrementNonceInHex,
+  isSmartTransactionCancellable,
+  isSmartTransactionPending,
+  replayHistory,
+  snapshotFromTxMeta,
 } from './utils';
 
 const SECOND = 1000;
 export const DEFAULT_INTERVAL = SECOND * 5;
+const ETH_QUERY_ERROR_MSG =
+  '`ethQuery` is not defined on SmartTransactionsController';
 
 export type SmartTransactionsControllerConfig = BaseConfig & {
   interval: number;
@@ -84,7 +86,7 @@ export default class SmartTransactionsController extends StaticIntervalPollingCo
 
   private readonly getNonceLock: any;
 
-  private ethQuery: EthQuery;
+  private ethQuery: EthQuery | undefined;
 
   public confirmExternalTransaction: any;
 
@@ -168,7 +170,7 @@ export default class SmartTransactionsController extends StaticIntervalPollingCo
     this.initialize();
     this.setIntervalLength(this.config.interval);
     this.getNonceLock = getNonceLock;
-    this.ethQuery = new EthQuery(provider);
+    this.ethQuery = undefined;
     this.confirmExternalTransaction = confirmExternalTransaction;
     this.trackMetaMetricsEvent = trackMetaMetricsEvent;
     this.getNetworkClientById = getNetworkClientById;
@@ -333,7 +335,7 @@ export default class SmartTransactionsController extends StaticIntervalPollingCo
       ethQuery = this.ethQuery,
     }: {
       chainId: Hex;
-      ethQuery: EthQuery;
+      ethQuery: EthQuery | undefined;
     },
   ): void {
     const { smartTransactionsState } = this.state;
@@ -345,6 +347,9 @@ export default class SmartTransactionsController extends StaticIntervalPollingCo
     const isNewSmartTransaction = this.isNewSmartTransaction(
       smartTransaction.uuid,
     );
+    if (this.ethQuery === undefined) {
+      throw new Error(ETH_QUERY_ERROR_MSG);
+    }
 
     this.trackStxStatusChange(
       smartTransaction,
@@ -445,12 +450,16 @@ export default class SmartTransactionsController extends StaticIntervalPollingCo
       ethQuery = this.ethQuery,
     }: {
       chainId: Hex;
-      ethQuery: EthQuery;
+      ethQuery: EthQuery | undefined;
     },
   ) {
     if (smartTransaction.skipConfirm) {
       return;
     }
+
+    if (ethQuery === undefined) {
+      throw new Error(ETH_QUERY_ERROR_MSG);
+    }
     const txHash = smartTransaction.statusMetadata?.minedHash;
     try {
       const transactionReceipt: {
@@ -744,9 +753,15 @@ export default class SmartTransactionsController extends StaticIntervalPollingCo
   }: {
     networkClientId?: NetworkClientId;
   } = {}): EthQuery {
-    return networkClientId
-      ? new EthQuery(this.getNetworkClientById(networkClientId).provider)
-      : this.ethQuery;
+    if (networkClientId) {
+      return new EthQuery(this.getNetworkClientById(networkClientId).provider);
+    }
+
+    if (this.ethQuery === undefined) {
+      throw new Error(ETH_QUERY_ERROR_MSG);
+    }
+
+    return this.ethQuery;
   }
 
   // TODO: This should return if the cancellation was on chain or not (for nonce management)