diff --git a/curriculum/challenges/english/03-front-end-libraries/bootstrap/taste-the-bootstrap-button-color-rainbow.english.md b/curriculum/challenges/english/03-front-end-libraries/bootstrap/taste-the-bootstrap-button-color-rainbow.english.md
index 82a86b6565..37c436eb79 100644
--- a/curriculum/challenges/english/03-front-end-libraries/bootstrap/taste-the-bootstrap-button-color-rainbow.english.md
+++ b/curriculum/challenges/english/03-front-end-libraries/bootstrap/taste-the-bootstrap-button-color-rainbow.english.md
@@ -7,7 +7,7 @@ challengeType: 0
 ## Description
 <section id='description'>
 The <code>btn-primary</code> class is the main color you'll use in your app. It is useful for highlighting actions you want your user to take.
-Replace Bootstrap's <code>btn-default</code> class by <code>btn-primary</code> in your button.
+Replace Bootstrap's <code>btn-default</code> class with <code>btn-primary</code> in your button.
 Note that this button will still need the <code>btn</code> and <code>btn-block</code> classes.
 </section>