diff --git a/2-ui/1-document/07-modifying-document/article.md b/2-ui/1-document/07-modifying-document/article.md
index b5a3f752..54060079 100644
--- a/2-ui/1-document/07-modifying-document/article.md
+++ b/2-ui/1-document/07-modifying-document/article.md
@@ -199,7 +199,7 @@ For instance:
 <p>Bye</p>
 ```
 
-That's how we can append an arbitrary HTML to the page.
+That's how we can append arbitrary HTML to the page.
 
 Here's the picture of insertion variants: