diff --git a/server/src/controllers/diagnosticController.ts b/server/src/controllers/diagnosticController.ts
index 19326d3b3..ffe7c6f5f 100755
--- a/server/src/controllers/diagnosticController.ts
+++ b/server/src/controllers/diagnosticController.ts
@@ -2,7 +2,12 @@ import { IDiagnosticService } from "@/service/index.js";
 import { Request, Response, NextFunction } from "express";
 
 const SERVICE_NAME = "diagnosticController";
-class DiagnosticController {
+
+export interface IDiagnosticController {
+	getSystemStats: (req: Request, res: Response, next: NextFunction) => Promise<Response | void>;
+}
+
+class DiagnosticController implements IDiagnosticController {
 	static SERVICE_NAME = SERVICE_NAME;
 
 	private diagnosticService: IDiagnosticService;
diff --git a/server/src/routes/diagnosticRoute.ts b/server/src/routes/diagnosticRoute.ts
index b2cefe4aa..32b857e8d 100755
--- a/server/src/routes/diagnosticRoute.ts
+++ b/server/src/routes/diagnosticRoute.ts
@@ -1,11 +1,12 @@
 import { RequestHandler, Router } from "express";
 import { isAllowed } from "../middleware/isAllowed.js";
+import { IDiagnosticController } from "@/controllers/diagnosticController.js";
 
 class DiagnosticRoutes {
 	private router: Router;
-	private diagnosticController: any;
+	private diagnosticController: IDiagnosticController;
 
-	constructor(diagnosticController: any, verifyJWT: RequestHandler) {
+	constructor(diagnosticController: IDiagnosticController, verifyJWT: RequestHandler) {
 		this.router = Router();
 		this.diagnosticController = diagnosticController;
 		this.initRoutes(verifyJWT);