diff --git a/curriculum/challenges/english/06-quality-assurance/advanced-node-and-express/serialization-of-a-user-object.md b/curriculum/challenges/english/06-quality-assurance/advanced-node-and-express/serialization-of-a-user-object.md
index 6c204b1d40..32b3ab7963 100644
--- a/curriculum/challenges/english/06-quality-assurance/advanced-node-and-express/serialization-of-a-user-object.md
+++ b/curriculum/challenges/english/06-quality-assurance/advanced-node-and-express/serialization-of-a-user-object.md
@@ -12,7 +12,7 @@ Serialization and deserialization are important concepts in regards to authentic
 
 To set this up properly, we need to have a serialize function and a deserialize function. In Passport, we create these with `passport.serializeUser( OURFUNCTION )` and `passport.deserializeUser( OURFUNCTION )`
 
-The `serializeUser` is called with 2 arguments, the full user object and a callback used by passport. A unique key to identify that user should be returned in the callback, the easiest one to use being the user's `_id` in the object. It should be unique as it generated by MongoDB. Similarly, `deserializeUser` is called with that key and a callback function for passport as well, but, this time, we have to take that key and return the full user object to the callback. To make a query search for a Mongo `_id`, you will have to create `const ObjectID = require('mongodb').ObjectID;`, and then to use it you call `new ObjectID(THE_ID)`. Be sure to add `mongodb@~3.6.0` as a dependency. You can see this in the examples below:
+The `serializeUser` is called with 2 arguments, the full user object and a callback used by passport. A unique key to identify that user should be returned in the callback, the easiest one to use being the user's `_id` in the object. It should be unique as it is generated by MongoDB. Similarly, `deserializeUser` is called with that key and a callback function for passport as well, but, this time, we have to take that key and return the full user object to the callback. To make a query search for a Mongo `_id`, you will have to create `const ObjectID = require('mongodb').ObjectID;`, and then to use it you call `new ObjectID(THE_ID)`. Be sure to add `mongodb@~3.6.0` as a dependency. You can see this in the examples below:
 
 ```js
 passport.serializeUser((user, done) => {