diff --git a/services/real-time/app/js/Errors.js b/services/real-time/app/js/Errors.js
index bdda1b4c21..06bf33cf5d 100644
--- a/services/real-time/app/js/Errors.js
+++ b/services/real-time/app/js/Errors.js
@@ -1,8 +1,8 @@
-class CodedError extends Error {
+const OError = require('@overleaf/o-error')
+
+class CodedError extends OError {
   constructor(message, code) {
-    super(message)
-    this.name = this.constructor.name
-    this.code = code
+    super(message, { code })
   }
 }
 
diff --git a/services/real-time/app/js/Router.js b/services/real-time/app/js/Router.js
index ae10d12e2b..87c1991d4c 100644
--- a/services/real-time/app/js/Router.js
+++ b/services/real-time/app/js/Router.js
@@ -33,8 +33,8 @@ module.exports = Router = {
     attrs.client_id = client.id
     attrs.err = error
     if (error.name === 'CodedError') {
-      logger.warn(attrs, error.message, { code: error.code })
-      const serializedError = { message: error.message, code: error.code }
+      logger.warn(attrs, error.message)
+      const serializedError = { message: error.message, code: error.info.code }
       callback(serializedError)
     } else if (error.message === 'unexpected arguments') {
       // the payload might be very large, put it on level info
diff --git a/services/real-time/package.json b/services/real-time/package.json
index 4a7acfc1cd..0fab05972f 100644
--- a/services/real-time/package.json
+++ b/services/real-time/package.json
@@ -19,6 +19,7 @@
     "format:fix": "node_modules/.bin/prettier-eslint $PWD'/**/*.js' --write"
   },
   "dependencies": {
+    "@overleaf/o-error": "^3.0.0",
     "async": "^0.9.0",
     "base64id": "0.1.0",
     "basic-auth-connect": "^1.0.0",
diff --git a/services/real-time/test/unit/js/WebApiManagerTests.js b/services/real-time/test/unit/js/WebApiManagerTests.js
index 2d792b563b..52c6da137a 100644
--- a/services/real-time/test/unit/js/WebApiManagerTests.js
+++ b/services/real-time/test/unit/js/WebApiManagerTests.js
@@ -152,7 +152,9 @@ describe('WebApiManager', function () {
           .calledWith(
             sinon.match({
               message: 'rate-limit hit when joining project',
-              code: 'TooManyRequests'
+              info: {
+                code: 'TooManyRequests'
+              }
             })
           )
           .should.equal(true)