closes #5140

public/src/app.js

@@ -301,6 +301,10 @@ app.cacheBuster = null;
 			return app.alertError('[[error:not-logged-in]]');
 		}
 
+		if (parseInt(touid, 10) === parseInt(app.user.uid, 10)) {
+			return app.alertError('[[error:cant-chat-with-yourself]]');
+		}
+
 		socket.emit('modules.chats.newRoom', {touid: touid}, function (err, roomId) {
 			if (err) {
 				return app.alertError(err.message);

public/src/client/chats/search.js

@@ -41,7 +41,11 @@ define('forum/chats/search', ['components'], function (components) {
 
 	function displayResults(chatsListEl, data) {
 		chatsListEl.empty();
-
+		
+		data.users = data.users.filter(function (user) {
+			return parseInt(user.uid, 10) !== parseInt(app.user.uid, 10);
+		});
+		
 		if (!data.users.length) {
 			return chatsListEl.translateHtml('<li><div><span>[[users:no-users-found]]</span></div></li>');
 		}

src/messaging.js

@@ -367,6 +367,10 @@ var userNotifications = require('./user/notifications');
 			return callback(new Error('[[error:chat-disabled]]'));
 		}
 
+		if (parseInt(uid, 10) === parseInt(toUid, 10)) {
+			return callback(new Error('[[error:cant-chat-with-yourself'));
+		}
+
 		async.waterfall([
 			function (next) {
 				user.exists(toUid, next);