diff --git a/services/chat/app/js/mongodb.js b/services/chat/app/js/mongodb.js
index 5b0168bda8..6dfb575b7e 100644
--- a/services/chat/app/js/mongodb.js
+++ b/services/chat/app/js/mongodb.js
@@ -2,10 +2,9 @@ const Settings = require('settings-sharelatex')
 const { MongoClient, ObjectId } = require('mongodb')
 
 const clientPromise = MongoClient.connect(Settings.mongo.url)
-const dbPromise = clientPromise.then((client) => client.db())
 
 async function getCollection(name) {
-  return (await dbPromise).collection(name)
+  return (await clientPromise).db().collection(name)
 }
 
 async function waitForDb() {