diff --git a/wp-includes/css/buttons.css b/wp-includes/css/buttons.css
index 3e94661ea4..219111bdcf 100644
--- a/wp-includes/css/buttons.css
+++ b/wp-includes/css/buttons.css
@@ -49,6 +49,7 @@ TABLE OF CONTENTS:
 	border-width: 1px;
 	border-style: solid;
 	-webkit-border-radius: 3px;
+	-webkit-appearance: none;
 	border-radius: 3px;
 	white-space: nowrap;
 	-webkit-box-sizing: border-box;