diff --git a/app/definitions/rest/v1/omnichannel.ts b/app/definitions/rest/v1/omnichannel.ts
index c34963a5..028b76d9 100644
--- a/app/definitions/rest/v1/omnichannel.ts
+++ b/app/definitions/rest/v1/omnichannel.ts
@@ -194,6 +194,10 @@ export type OmnichannelEndpoints = {
 		};
 	};
 
+	'livechat/agents/:uid/departments?enabledDepartmentsOnly=true': {
+		GET: () => { departments: ILivechatDepartment[] };
+	};
+
 	'canned-responses': {
 		GET: (params: PaginatedRequest<{ scope?: string; departmentId?: string; text?: string }>) => PaginatedResult<{
 			cannedResponses: ICannedResponse[];
diff --git a/app/ee/omnichannel/lib/subscriptions/inquiry.ts b/app/ee/omnichannel/lib/subscriptions/inquiry.ts
index 4201fb2a..69953e37 100644
--- a/app/ee/omnichannel/lib/subscriptions/inquiry.ts
+++ b/app/ee/omnichannel/lib/subscriptions/inquiry.ts
@@ -3,7 +3,6 @@ import { store } from '../../../../lib/auxStore';
 import RocketChat from '../../../../lib/rocketchat';
 import { inquiryQueueAdd, inquiryQueueRemove, inquiryQueueUpdate, inquiryRequest } from '../../actions/inquiry';
 import sdk from '../../../../lib/rocketchat/services/sdk';
-import { ILivechatDepartment } from '../../../../definitions/ILivechatDepartment';
 import { IOmnichannelRoom } from '../../../../definitions';
 
 interface IArgsQueueOmnichannel extends IOmnichannelRoom {
@@ -82,7 +81,7 @@ export default function subscribeInquiry() {
 			throw new Error('inquiry: @subscribeInquiry user.id not found');
 		}
 
-		RocketChat.getAgentDepartments(user.id).then((result: { success: boolean; departments: ILivechatDepartment[] }) => {
+		RocketChat.getAgentDepartments(user.id).then(result => {
 			if (result.success) {
 				const { departments } = result;
 
diff --git a/app/lib/rocketchat/services/restApi.ts b/app/lib/rocketchat/services/restApi.ts
index 825abed0..e5a795b0 100644
--- a/app/lib/rocketchat/services/restApi.ts
+++ b/app/lib/rocketchat/services/restApi.ts
@@ -395,10 +395,8 @@ export const getTagsList = (): Promise<
 	// RC 2.0.0
 	sdk.methodCallWrapper('livechat:getTagsList');
 
-export const getAgentDepartments = (uid: string): any =>
+export const getAgentDepartments = (uid: string) =>
 	// RC 2.4.0
-	// TODO: missing definitions from server
-	// @ts-ignore
 	sdk.get(`livechat/agents/${uid}/departments?enabledDepartmentsOnly=true`);
 
 export const getCustomFields = () =>
diff --git a/app/views/LivechatEditView.tsx b/app/views/LivechatEditView.tsx
index 39e893e7..22dcada2 100644
--- a/app/views/LivechatEditView.tsx
+++ b/app/views/LivechatEditView.tsx
@@ -146,7 +146,7 @@ const LivechatEditView = ({
 	const getAgentDepartments = async () => {
 		const result = await RocketChat.getAgentDepartments(visitor?._id);
 		if (result.success) {
-			const agentDepartments = result.departments.map((dept: { departmentId: string }) => dept.departmentId);
+			const agentDepartments = result.departments.map(dept => dept.departmentId);
 			getTagsList(agentDepartments);
 		}
 	};