diff --git a/src/controllers/CampaignController.js b/src/controllers/CampaignController.js
index 44aee146..1db5c2a6 100644
--- a/src/controllers/CampaignController.js
+++ b/src/controllers/CampaignController.js
@@ -80,6 +80,7 @@ class CampaignController {
   }
 
   async finishCampaign(req, res) {
+    const { id } = req.params;
     if(!id) throw new BadRequestError('No id provided');
     const result = await this.CampaignService.finishCampaign(id);
     return res.status(200).json(result);
diff --git a/src/utils/errorHandler.js b/src/utils/errorHandler.js
index f3f4ed8f..6eb2caa2 100644
--- a/src/utils/errorHandler.js
+++ b/src/utils/errorHandler.js
@@ -1,6 +1,6 @@
 import saveError from "./ErrorHistory";
 
-export const errorHandler = (err, req, res, next) => {
+export const errorHandler = (err, _req, res, _next) => {
     if(err instanceof GeneralError) {
         return res.status(err.getCode()).json({
             status: 'error',
@@ -21,17 +21,14 @@ export class GeneralError extends Error {
     }
 
     getCode() {
-        if(this instanceof BadRequestError) return 400;
-        else if(this instanceof UnauthorizedError) return 404;
-        else if(this instanceof ForbiddenError) return 404;
-        else if(this instanceof NotFoundError) return 404;
-        else if(this instanceof ConflictError) return 409;
+        return this.code;
     }
 }
 
 export class BadRequestError extends GeneralError {
     constructor(msg) {
         super(msg);
+        this.code = 400;
         this.name = `BadRequestError:${msg}`;
     }
 }
@@ -39,6 +36,7 @@ export class BadRequestError extends GeneralError {
 export class UnauthorizedError extends GeneralError {
     constructor(msg) {
         super(msg);
+        this.code = 401;
         this.name = `UnauthorizedError:${msg}`;
     }
 }
@@ -46,6 +44,7 @@ export class UnauthorizedError extends GeneralError {
 export class ForbiddenError extends GeneralError {
     constructor(msg) {
         super(msg);
+        this.code = 403;
         this.name = `ForbiddenError:${msg}`;
     }
 }
@@ -53,6 +52,7 @@ export class ForbiddenError extends GeneralError {
 export class NotFoundError extends GeneralError {
     constructor(msg) {
         super(msg);
+        this.code = 404;
         this.name = `NotFoundError:${msg}`;
     }
 }
@@ -60,6 +60,7 @@ export class NotFoundError extends GeneralError {
 export class ConflictError extends GeneralError {
     constructor(msg) {
         super(msg);
+        this.code = 409;
         this.name = `ConflictError:${msg}`;
     }
 }
\ No newline at end of file