diff --git a/2-ui/1-document/10-size-and-scroll-window/article.md b/2-ui/1-document/10-size-and-scroll-window/article.md
index edfb8bcd..30605615 100644
--- a/2-ui/1-document/10-size-and-scroll-window/article.md
+++ b/2-ui/1-document/10-size-and-scroll-window/article.md
@@ -132,9 +132,9 @@ To make the document unscrollable, it's enough to set `document.body.style.overf
 ```online
 Try it:
 
-<button onclick="document.body.style.overflow = 'hidden'">`document.body.style.overflow = 'hidden'`</button>
+<button onclick="document.body.style.overflow = 'hidden'">document.body.style.overflow = 'hidden'</button>
 
-<button onclick="document.body.style.overflow = ''">`document.body.style.overflow = ''`</button>
+<button onclick="document.body.style.overflow = ''">document.body.style.overflow = ''</button>
 
 The first button freezes the scroll, the second one resumes it.
 ```