diff --git a/wax-prosemirror-core/src/components/ui/MenuButton.js b/wax-prosemirror-core/src/components/ui/MenuButton.js
index 958c458d4f910b314740eabdb6c79beb428fb20c..46a9680aacad20a876b19549e4463dc1c3a96b4f 100644
--- a/wax-prosemirror-core/src/components/ui/MenuButton.js
+++ b/wax-prosemirror-core/src/components/ui/MenuButton.js
@@ -91,6 +91,7 @@ const MenuButton = props => {
   return (
     <Wrapper
       active={active}
+      aria-pressed={active || false}
       className={className}
       disabled={disabled}
       onMouseDown={onMouseDown}