diff --git a/4.2.4-Header-Editor.md b/4.2.4-Header-Editor.md
index fafeaf5..6b47205 100644
--- a/4.2.4-Header-Editor.md
+++ b/4.2.4-Header-Editor.md
@@ -2,7 +2,7 @@
 
 Header Editor is an extension that allows you to modify the request header and response header, cancel a request and redirect a request.
 
-Note: header names are case sensitive
+:exclamation: pay attention, header names are case sensitive
 
 :small_orange_diamond: remove all ETag's
  * Test: https://httpbin.org/