diff --git a/src/privileges/admin.js b/src/privileges/admin.js
index dcf7cfa947..c29cb60050 100644
--- a/src/privileges/admin.js
+++ b/src/privileges/admin.js
@@ -76,7 +76,6 @@ privsAdmin.socketMap = {
 	'admin.rooms.getAll': 'admin:dashboard',
 	'admin.analytics.get': 'admin:dashboard',
 
-	'admin.categories.create': 'admin:categories',
 	'admin.categories.update': 'admin:categories',
 	'admin.categories.purge': 'admin:categories',
 	'admin.categories.copySettingsFrom': 'admin:categories',
diff --git a/src/socket.io/admin/categories.js b/src/socket.io/admin/categories.js
index af45e1643d..563cd310be 100644
--- a/src/socket.io/admin/categories.js
+++ b/src/socket.io/admin/categories.js
@@ -7,15 +7,6 @@ const sockets = require('..');
 
 const Categories = module.exports;
 
-Categories.create = async function (socket, data) {
-	sockets.warnDeprecated(socket, 'POST /api/v3/categories');
-
-	if (!data) {
-		throw new Error('[[error:invalid-data]]');
-	}
-	return await api.categories.create(socket, data);
-};
-
 Categories.getNames = async function () {
 	return await categories.getAllCategoryFields(['cid', 'name']);
 };
diff --git a/test/categories.js b/test/categories.js
index 0f9c4d7c9c..1f87a60a2c 100644
--- a/test/categories.js
+++ b/test/categories.js
@@ -350,20 +350,17 @@ describe('Categories', () => {
 
 	describe('admin socket methods', () => {
 		const socketCategories = require('../src/socket.io/admin/categories');
+		const apiCategories = require('../src/api/categories');
 		let cid;
-		before((done) => {
-			socketCategories.create({ uid: adminUid }, {
+		before(async () => {
+			const category = await apiCategories.create({ uid: adminUid }, {
 				name: 'update name',
 				description: 'update description',
 				parentCid: categoryObj.cid,
 				icon: 'fa-check',
 				order: '5',
-			}, (err, category) => {
-				assert.ifError(err);
-
-				cid = category.cid;
-				done();
 			});
+			cid = category.cid;
 		});
 
 		it('should return error with invalid data', (done) => {