diff --git a/public/src/admin/manage/users.js b/public/src/admin/manage/users.js
index ebd23da5fc1f..4776a9bad6cb 100644
--- a/public/src/admin/manage/users.js
+++ b/public/src/admin/manage/users.js
@@ -353,16 +353,15 @@ define('admin/manage/users', ['translator', 'benchpress', 'autocomplete'], funct
 				password: password,
 			};
 
-			socket.emit('admin.user.createUser', user, function (err) {
-				if (err) {
-					return errorEl.translateHtml('[[admin/manage/users:alerts.error-x, ' + err.message + ']]').removeClass('hide');
-				}
-
+			$.post(config.relative_path + '/api/v1/users', user).done(function () {
 				modal.modal('hide');
 				modal.on('hidden.bs.modal', function () {
 					ajaxify.refresh();
 				});
 				app.alertSuccess('[[admin/manage/users:alerts.create-success]]');
+			}).fail(function () {
+				console.log(arguments);
+				// return errorEl.translateHtml('[[admin/manage/users:alerts.error-x, ' + err.message + ']]').removeClass('hide');
 			});
 		}
 
diff --git a/public/src/sockets.js b/public/src/sockets.js
index 0d2c61dc1de3..a5b087222cac 100644
--- a/public/src/sockets.js
+++ b/public/src/sockets.js
@@ -72,6 +72,9 @@ socket = window.socket;
 		socket.on('event:alert', function (params) {
 			app.alert(params);
 		});
+		socket.on('event:deprecated_call', function (data) {
+			console.warn('[socket.io] ', data.eventName, 'is now deprecated in favour of', data.replacement);
+		});
 
 		socket.removeAllListeners('event:nodebb.ready');
 		socket.on('event:nodebb.ready', function (data) {
diff --git a/src/socket.io/admin/user.js b/src/socket.io/admin/user.js
index fa698301e4c1..b458d4fcbe98 100644
--- a/src/socket.io/admin/user.js
+++ b/src/socket.io/admin/user.js
@@ -11,6 +11,7 @@ const meta = require('../../meta');
 const plugins = require('../../plugins');
 const translator = require('../../translator');
 const flags = require('../../flags');
+const sockets = require('..');
 
 const User = module.exports;
 
@@ -57,6 +58,8 @@ User.removeAdmins = async function (socket, uids) {
 };
 
 User.createUser = async function (socket, userData) {
+	sockets.warnDeprecated(socket, 'POST /api/v1/users');
+
 	if (!userData) {
 		throw new Error('[[error:invalid-data]]');
 	}
diff --git a/src/socket.io/index.js b/src/socket.io/index.js
index 50c116d71beb..3090019fa711 100644
--- a/src/socket.io/index.js
+++ b/src/socket.io/index.js
@@ -258,3 +258,10 @@ Sockets.reqFromSocket = function (socket, payload, event) {
 		headers: headers,
 	};
 };
+
+Sockets.warnDeprecated = (socket, replacement) => {
+	socket.emit('event:deprecated_call', {
+		eventName: socket.previousEvents[socket.previousEvents.length - 1],
+		replacement: replacement,
+	});
+};