diff --git a/app/definitions/IUser.ts b/app/definitions/IUser.ts
index aaf49bd28..6dfbdf5e7 100644
--- a/app/definitions/IUser.ts
+++ b/app/definitions/IUser.ts
@@ -111,6 +111,7 @@ export interface INotificationPreferences {
 	desktopNotifications: TNotifications;
 	pushNotifications: TNotifications;
 	emailNotificationMode?: 'mentions' | 'nothing';
+	language?: string;
 }
 
 export interface IUserPreferences {
diff --git a/app/definitions/rest/v1/users.ts b/app/definitions/rest/v1/users.ts
index e8e27c9d4..b72f4821a 100644
--- a/app/definitions/rest/v1/users.ts
+++ b/app/definitions/rest/v1/users.ts
@@ -26,7 +26,7 @@ export type UsersEndpoints = {
 		};
 	};
 	'users.setPreferences': {
-		POST: (params: { userId: IUser['_id']; data: Partial<INotificationPreferences> }) => {
+		POST: (params: { userId?: IUser['_id']; data: Partial<INotificationPreferences> }) => {
 			user: IUserPreferences;
 			success: boolean;
 		};
diff --git a/app/lib/rocketchat/services/restApi.ts b/app/lib/rocketchat/services/restApi.ts
index aa3e40142..6bb6e6c1c 100644
--- a/app/lib/rocketchat/services/restApi.ts
+++ b/app/lib/rocketchat/services/restApi.ts
@@ -551,10 +551,8 @@ export const saveUserProfile = (data: any, customFields?: any): any =>
 	// @ts-ignore
 	sdk.post('users.updateOwnBasicInfo', { data, customFields });
 
-export const saveUserPreferences = (data: any): any =>
+export const saveUserPreferences = (data: Partial<INotificationPreferences>) =>
 	// RC 0.62.0
-	// TODO: missing definitions from server
-	// @ts-ignore
 	sdk.post('users.setPreferences', { data });
 
 export const saveNotificationSettings = (roomId: string, notifications: any): any =>