diff --git a/src/api/topics.js b/src/api/topics.js
index 98b87c95b6..cca32a6818 100644
--- a/src/api/topics.js
+++ b/src/api/topics.js
@@ -75,8 +75,8 @@ topicsAPI.reply = async function (caller, data) {
 	user.updateOnlineUsers(caller.uid);
 	if (caller.uid) {
 		socketHelpers.emitToUids('event:new_post', result, [caller.uid]);
-	} else if (caller.uid === 0 && caller.sessionID) {
-		websockets.in('sess_' + caller.sessionID).emit('event:new_post', result);
+	} else if (caller.uid === 0) {
+		websockets.in('online_guests').emit('event:new_post', result);
 	}
 
 	socketHelpers.notifyNew(caller.uid, 'newPost', result);
diff --git a/src/socket.io/index.js b/src/socket.io/index.js
index 952595f57a..6e6be257ae 100644
--- a/src/socket.io/index.js
+++ b/src/socket.io/index.js
@@ -198,15 +198,13 @@ async function authorize(socket, callback) {
 	}
 
 	await cookieParserAsync(request);
-	const sid = request.signedCookies[nconf.get('sessionKey')];
-	const sessionData = await getSessionAsync(sid);
+	const sessionData = await getSessionAsync(request.signedCookies[nconf.get('sessionKey')]);
 	if (sessionData && sessionData.passport && sessionData.passport.user) {
 		request.session = sessionData;
 		socket.uid = parseInt(sessionData.passport.user, 10);
 	} else {
 		socket.uid = 0;
 	}
-	socket.sessionID = sid;
 	request.uid = socket.uid;
 	callback();
 }