diff --git a/chrome/urlbar_and_popup_equal_width.css b/chrome/urlbar_and_popup_equal_width.css
index ecb4bee..a4ec689 100644
--- a/chrome/urlbar_and_popup_equal_width.css
+++ b/chrome/urlbar_and_popup_equal_width.css
@@ -1,5 +1,6 @@
 /* Constrains urlbar popup to urlbar width */
 /* Firefox 70+ */
+/* This functionality is now built in to Firefox, set browser.urlbar.megabar to true instead of using this stylesheet */
 
 #urlbar-container{ transform: translateY(0); position: relative; z-index: 10 }
 #nav-bar-customization-target{ overflow: visible !important }