diff --git a/gg.js b/gg.js
new file mode 100644
index 0000000000..c49efdb2af
--- /dev/null
+++ b/gg.js
@@ -0,0 +1,48 @@
+/* eslint-disable no-await-in-loop */
+/* globals require, console, process */
+
+'use strict';
+
+const nconf = require('nconf');
+
+nconf.file({
+	file: 'config.json',
+});
+
+nconf.defaults({
+	base_dir: __dirname,
+	views_dir: './build/public/templates',
+	upload_path: 'public/uploads',
+});
+
+const db = require('./src/database');
+
+db.init(async (err) => {
+	if (err) {
+		console.log(`NodeBB could not connect to your database. Error: ${err.message}`);
+		process.exit();
+	}
+
+	await search();
+	console.log('done');
+	process.exit();
+});
+
+async function search() {
+	const batch = require('./src/batch');
+	const topics = require('./src/topics');
+	await batch.processSortedSet('topics:tid', async (tids) => {
+		await Promise.all(tids.map(async (tid) => {
+			const topicData = await db.getObjectFields(`topic:${tid}`, ['cid', 'tid', 'uid', 'oldCid', 'timestamp']);
+			if (topicData.cid && topicData.oldCid) {
+				const isMember = await db.isSortedSetMember(`cid:${topicData.oldCid}:uid:${topicData.uid}:tids`, topicData.tid);
+				if (isMember) {
+					await db.sortedSetRemove(`cid:${topicData.oldCid}:uid:${topicData.uid}:tids`, tid);
+					await db.sortedSetAdd(`cid:${topicData.cid}:uid:${topicData.uid}:tids`, topicData.timestamp, tid);
+				}
+			}
+		}));
+	}, {
+		batch: 500,
+	});
+}
\ No newline at end of file
diff --git a/src/upgrades/1.7.4/fix_user_topics_per_category.js b/src/upgrades/1.7.4/fix_user_topics_per_category.js
index 5ee19fb41f..75ffef2c24 100644
--- a/src/upgrades/1.7.4/fix_user_topics_per_category.js
+++ b/src/upgrades/1.7.4/fix_user_topics_per_category.js
@@ -14,7 +14,7 @@ module.exports = {
 				progress.incr();
 				const topicData = await db.getObjectFields(`topic:${tid}`, ['cid', 'tid', 'uid', 'oldCid', 'timestamp']);
 				if (topicData.cid && topicData.oldCid) {
-					const isMember = await db.isSortedSetMember(`cid:${topicData.oldCid}:uid:${topicData.uid}`, topicData.tid);
+					const isMember = await db.isSortedSetMember(`cid:${topicData.oldCid}:uid:${topicData.uid}:tids`, topicData.tid);
 					if (isMember) {
 						await db.sortedSetRemove(`cid:${topicData.oldCid}:uid:${topicData.uid}:tids`, tid);
 						await db.sortedSetAdd(`cid:${topicData.cid}:uid:${topicData.uid}:tids`, topicData.timestamp, tid);