diff --git a/lib/utils/config.js b/lib/utils/config.js
index 66e6afb2e..5b73af960 100644
--- a/lib/utils/config.js
+++ b/lib/utils/config.js
@@ -1,36 +1,36 @@
 // @flow
 
 import invariant from 'invariant';
 
 import type { DispatchRecoveryAttempt } from './action-utils.js';
 import type { CallServerEndpoint } from './call-server-endpoint.js';
 import type { CallKeyserverEndpoint } from './keyserver-call.js';
 import type { LogInActionSource } from '../types/account-types.js';
 import type { PlatformDetails } from '../types/device-types.js';
 
 export type Config = {
   +resolveInvalidatedCookie: ?(
     callServerEndpoint: CallServerEndpoint,
     callKeyserverEndpoint: CallKeyserverEndpoint,
     dispatchRecoveryAttempt: DispatchRecoveryAttempt,
     logInActionSource: LogInActionSource,
     keyserverID: string,
     getInitialNotificationsEncryptedMessage?: () => Promise<string>,
   ) => Promise<void>,
   +setSessionIDOnRequest: boolean,
   +calendarRangeInactivityLimit: ?number,
   +platformDetails: PlatformDetails,
 };
 
 let registeredConfig: ?Config = null;
 
-const registerConfig = (config: $Shape<Config>) => {
+const registerConfig = (config: Config) => {
   registeredConfig = { ...registeredConfig, ...config };
 };
 
 const getConfig = (): Config => {
   invariant(registeredConfig, 'config should be set');
   return registeredConfig;
 };
 
 export { registerConfig, getConfig };