diff --git a/browser/themes/shared/compacttheme.inc.css b/browser/themes/shared/compacttheme.inc.css
index 4e7cdea5540f..ca58a32f9957 100644
--- a/browser/themes/shared/compacttheme.inc.css
+++ b/browser/themes/shared/compacttheme.inc.css
@@ -28,9 +28,6 @@
   --chrome-selection-background-color: #5675B9;
 
   /* Url and search bars */
-  /* The URL bar needs an opaque background otherwise the domain highlighting
-     code (GetURLSecondaryColor) will not be able to calculate an appropriate
-     complement */
   --url-and-searchbar-background-color: rgb(71, 71, 73);
   --urlbar-separator-color: #5F6670;
   --urlbar-dropmarker-url: url("chrome://browser/skin/compacttheme/urlbar-history-dropmarker.svg");