diff --git a/phpBB/styles/prosilver/theme/colours.css b/phpBB/styles/prosilver/theme/colours.css
index fe5e4d7c85..7bdd5f4b87 100644
--- a/phpBB/styles/prosilver/theme/colours.css
+++ b/phpBB/styles/prosilver/theme/colours.css
@@ -697,15 +697,6 @@ dd.profile-warnings {
 	color: #d41142;
 }
 
-.button[disabled],
-.button[disabled]:hover,
-.button.disabled,
-.button.disabled:hover {
-	background: #e0e0e0;
-	border-color: #9e9e9e;
-	color: #9e9e9e;
-}
-
 .button .icon,
 .button-secondary,
 .c-button-icon {