diff --git a/8-web-components/2-custom-elements/article.md b/8-web-components/2-custom-elements/article.md
index 1cb74a7c..13af80b8 100644
--- a/8-web-components/2-custom-elements/article.md
+++ b/8-web-components/2-custom-elements/article.md
@@ -320,7 +320,7 @@ For example, buttons are instances of `HTMLButtonElement`, let's build upon it.
     class HelloButton extends HTMLButtonElement { /* custom element methods */ }
     ```
 
-2. Provide an third argument to `customElements.define`, that specifies the tag:
+2. Provide the third argument to `customElements.define`, that specifies the tag:
     ```js
     customElements.define('hello-button', HelloButton, *!*{extends: 'button'}*/!*);
     ```