diff --git a/lib/components/user/terms-of-use-pane.tsx b/lib/components/user/terms-of-use-pane.tsx
index 469c7bf2e..7054f4a84 100644
--- a/lib/components/user/terms-of-use-pane.tsx
+++ b/lib/components/user/terms-of-use-pane.tsx
@@ -3,6 +3,7 @@ import { connect } from 'react-redux'
 import { FormattedMessage, useIntl } from 'react-intl'
 import React, { FormEventHandler } from 'react'
 
+import { AppReduxState } from '../../util/state-types'
 import { LinkOpensNewWindow } from '../util/externalLink'
 import {
   TERMS_OF_SERVICE_PATH,
@@ -24,7 +25,7 @@ const TermsOfUsePane = ({
   handleBlur: () => void
   handleChange: FormEventHandler<Checkbox>
   locale: string
-  termsOfServiceLink: string
+  termsOfServiceLink?: string
   values: {
     hasConsentedToTerms: boolean
     storeTripHistory: boolean
@@ -101,7 +102,7 @@ const TermsOfUsePane = ({
     </div>
   )
 }
-const mapStateToProps = (state: any) => {
+const mapStateToProps = (state: AppReduxState) => {
   return {
     locale: state.otp.ui?.locale,
     termsOfServiceLink: state.otp.config.termsOfServiceLink,
diff --git a/lib/util/config-types.ts b/lib/util/config-types.ts
index a0d46c3d1..6b980bbf0 100644
--- a/lib/util/config-types.ts
+++ b/lib/util/config-types.ts
@@ -103,7 +103,9 @@ export type PersistenceConfig = (
   | LocalPersistenceConfig
   | MiddlewarePersistenceConfig
 ) & {
-  enabled?: boolean
+  enabled?: boolean | undefined
+  // eslint-disable-next-line camelcase
+  terms_of_storage?: boolean | undefined
 }
 
 /** Popup target settings */
@@ -370,6 +372,8 @@ export interface AppConfig {
   /** Whether to show the x minutes late/early in the itinerary body */
   showScheduleDeviation?: boolean
   stopViewer?: StopViewerConfig
+  /** Externally hosted terms of service URL */
+  termsOfServiceLink?: string
   /** App title shown in the browser title bar. */
   title?: string
   transitOperators?: TransitOperatorConfig[]