diff --git a/lib/storage/mongo-storage.js b/lib/storage/mongo-storage.js
index 987e41ef67d..261e10ee3bd 100644
--- a/lib/storage/mongo-storage.js
+++ b/lib/storage/mongo-storage.js
@@ -42,7 +42,7 @@ function init(env, cb, forceNewConnection) {
 
           const result = await mongo.db.command({ connectionStatus: 1 });
           const roles = result.authInfo.authenticatedUserRoles;
-          if (roles.length > 0 && roles[0].role == 'readAnyDatabase') {
+          if (roles && roles.length > 0 && roles[0].role == 'readAnyDatabase') {
             console.error('Mongo user is read only');
             cb(new Error('MongoDB connection is in read only mode! Go back to MongoDB configuration and check your database user has read and write access.'), null);
           }