diff --git a/app/definitions/IUser.ts b/app/definitions/IUser.ts
index 474a2105e..e1746554d 100644
--- a/app/definitions/IUser.ts
+++ b/app/definitions/IUser.ts
@@ -22,6 +22,16 @@ export interface IPersonalAccessToken extends ILoginToken {
 	bypassTwoFactor?: boolean;
 }
 
+export interface IUserRegistered {
+	_id: string;
+	type: string;
+	status: UserStatus;
+	active: boolean;
+	name: string;
+	username: string;
+	__rooms: string[];
+}
+
 export interface IUserEmailVerificationToken {
 	token: string;
 	address: string;
diff --git a/app/definitions/rest/v1/user.ts b/app/definitions/rest/v1/user.ts
index 7de12aabf..b8c37cc17 100644
--- a/app/definitions/rest/v1/user.ts
+++ b/app/definitions/rest/v1/user.ts
@@ -1,4 +1,4 @@
-import { IUser } from '../../IUser';
+import { IUser, IUserRegistered } from '../../IUser';
 
 export type UserEndpoints = {
 	'users.info': {
@@ -11,4 +11,7 @@ export type UserEndpoints = {
 			success: boolean;
 		};
 	};
+	'users.register': {
+		POST: (params: { name: string; email: string; username: string; pass: string }) => { user: IUserRegistered };
+	};
 };
diff --git a/app/lib/rocketchat/services/restApi.ts b/app/lib/rocketchat/services/restApi.ts
index 515269018..19217ef12 100644
--- a/app/lib/rocketchat/services/restApi.ts
+++ b/app/lib/rocketchat/services/restApi.ts
@@ -67,10 +67,8 @@ export const updateJitsiTimeout = (roomId: string): any =>
 	// @ts-ignore
 	sdk.post('video-conference/jitsi.update-timeout', { roomId });
 
-export const register = (credentials: any): any =>
+export const register = (credentials: { name: string; email: string; pass: string; username: string }) =>
 	// RC 0.50.0
-	// TODO: missing definitions from server
-	// @ts-ignore
 	sdk.post('users.register', credentials);
 
 export const forgotPassword = (email: string): any =>