diff --git a/lib/connection.js b/lib/connection.js
index 85a00c27bcb..d9dabf5b04e 100644
--- a/lib/connection.js
+++ b/lib/connection.js
@@ -424,7 +424,7 @@ Connection.prototype.startSession = _wrapConnHelper(function startSession(option
  * in a transaction. Mongoose will commit the transaction if the
  * async function executes successfully and attempt to retry if
  * there was a retriable error.
- * 
+ *
  * Calls the MongoDB driver's [`session.withTransaction()`](http://mongodb.github.io/node-mongodb-native/3.5/api/ClientSession.html#withTransaction),
  * but also handles resetting Mongoose document state as shown below.
  *
@@ -435,7 +435,7 @@ Connection.prototype.startSession = _wrapConnHelper(function startSession(option
  *       doc.rank = 'Captain';
  *       await doc.save({ session });
  *       doc.isNew; // false
- * 
+ *
  *       // Throw an error to abort the transaction
  *       throw new Error('Oops!');
  *     }).catch(() => {});