diff --git a/app/javascript/mastodon/components/column_header.js b/app/javascript/mastodon/components/column_header.js
index 43efa179e2..7850a93ece 100644
--- a/app/javascript/mastodon/components/column_header.js
+++ b/app/javascript/mastodon/components/column_header.js
@@ -152,7 +152,6 @@ class ColumnHeader extends React.PureComponent {
           className={collapsibleButtonClassName}
           title={formatMessage(collapsed ? messages.show : messages.hide)}
           aria-label={formatMessage(collapsed ? messages.show : messages.hide)}
-          aria-pressed={collapsed ? 'false' : 'true'}
           onClick={this.handleToggleClick}
         >
           <i className='icon-with-badge'>
diff --git a/app/javascript/mastodon/components/icon_button.js b/app/javascript/mastodon/components/icon_button.js
index 8fd9e10c04..49858f2e23 100644
--- a/app/javascript/mastodon/components/icon_button.js
+++ b/app/javascript/mastodon/components/icon_button.js
@@ -16,7 +16,6 @@ export default class IconButton extends React.PureComponent {
     onKeyPress: PropTypes.func,
     size: PropTypes.number,
     active: PropTypes.bool,
-    pressed: PropTypes.bool,
     expanded: PropTypes.bool,
     style: PropTypes.object,
     activeStyle: PropTypes.object,
@@ -98,7 +97,6 @@ export default class IconButton extends React.PureComponent {
       icon,
       inverted,
       overlay,
-      pressed,
       tabIndex,
       title,
       counter,
@@ -143,7 +141,6 @@ export default class IconButton extends React.PureComponent {
       <button
         type='button'
         aria-label={title}
-        aria-pressed={pressed}
         aria-expanded={expanded}
         title={title}
         className={classes}
diff --git a/app/javascript/mastodon/components/status_action_bar.js b/app/javascript/mastodon/components/status_action_bar.js
index 2e0c5e081c..b07837dcaf 100644
--- a/app/javascript/mastodon/components/status_action_bar.js
+++ b/app/javascript/mastodon/components/status_action_bar.js
@@ -361,8 +361,8 @@ class StatusActionBar extends ImmutablePureComponent {
     return (
       <div className='status__action-bar'>
         <IconButton className='status__action-bar__button' title={replyTitle} icon={status.get('in_reply_to_account_id') === status.getIn(['account', 'id']) ? 'reply' : replyIcon} onClick={this.handleReplyClick} counter={status.get('replies_count')} obfuscateCount />
-        <IconButton className={classNames('status__action-bar__button', { reblogPrivate })} disabled={!publicStatus && !reblogPrivate} active={status.get('reblogged')} pressed={status.get('reblogged')} title={reblogTitle} icon='retweet' onClick={this.handleReblogClick} counter={withCounters ? status.get('reblogs_count') : undefined} />
-        <IconButton className='status__action-bar__button star-icon' animate active={status.get('favourited')} pressed={status.get('favourited')} title={intl.formatMessage(messages.favourite)} icon='star' onClick={this.handleFavouriteClick} counter={withCounters ? status.get('favourites_count') : undefined} />
+        <IconButton className={classNames('status__action-bar__button', { reblogPrivate })} disabled={!publicStatus && !reblogPrivate} active={status.get('reblogged')} title={reblogTitle} icon='retweet' onClick={this.handleReblogClick} counter={withCounters ? status.get('reblogs_count') : undefined} />
+        <IconButton className='status__action-bar__button star-icon' animate active={status.get('favourited')} title={intl.formatMessage(messages.favourite)} icon='star' onClick={this.handleFavouriteClick} counter={withCounters ? status.get('favourites_count') : undefined} />
         <IconButton className='status__action-bar__button bookmark-icon' disabled={!signedIn} active={status.get('bookmarked')} title={intl.formatMessage(messages.bookmark)} icon='bookmark' onClick={this.handleBookmarkClick} />
 
         {shareButton}
diff --git a/app/javascript/mastodon/features/hashtag_timeline/index.js b/app/javascript/mastodon/features/hashtag_timeline/index.js
index ec524be8f8..b635c35291 100644
--- a/app/javascript/mastodon/features/hashtag_timeline/index.js
+++ b/app/javascript/mastodon/features/hashtag_timeline/index.js
@@ -194,7 +194,7 @@ class HashtagTimeline extends React.PureComponent {
       const following = tag.get('following');
 
       followButton = (
-        <button className={classNames('column-header__button')} onClick={this.handleFollow} disabled={!signedIn} title={intl.formatMessage(following ? messages.unfollowHashtag : messages.followHashtag)} aria-label={intl.formatMessage(following ? messages.unfollowHashtag : messages.followHashtag)} aria-pressed={following ? 'true' : 'false'}>
+        <button className={classNames('column-header__button')} onClick={this.handleFollow} disabled={!signedIn} title={intl.formatMessage(following ? messages.unfollowHashtag : messages.followHashtag)} aria-label={intl.formatMessage(following ? messages.unfollowHashtag : messages.followHashtag)}>
           <Icon id={following ? 'user-times' : 'user-plus'} fixedWidth className='column-header__icon' />
         </button>
       );
diff --git a/app/javascript/mastodon/features/home_timeline/index.js b/app/javascript/mastodon/features/home_timeline/index.js
index 749a47e76a..ae11ccbe47 100644
--- a/app/javascript/mastodon/features/home_timeline/index.js
+++ b/app/javascript/mastodon/features/home_timeline/index.js
@@ -130,7 +130,6 @@ class HomeTimeline extends React.PureComponent {
           className={classNames('column-header__button', { 'active': showAnnouncements })}
           title={intl.formatMessage(showAnnouncements ? messages.hide_announcements : messages.show_announcements)}
           aria-label={intl.formatMessage(showAnnouncements ? messages.hide_announcements : messages.show_announcements)}
-          aria-pressed={showAnnouncements ? 'true' : 'false'}
           onClick={this.handleToggleAnnouncementsClick}
         >
           <IconWithBadge id='bullhorn' count={unreadAnnouncements} />
diff --git a/app/javascript/mastodon/features/picture_in_picture/components/footer.js b/app/javascript/mastodon/features/picture_in_picture/components/footer.js
index 0beb2e14dc..5b875dc302 100644
--- a/app/javascript/mastodon/features/picture_in_picture/components/footer.js
+++ b/app/javascript/mastodon/features/picture_in_picture/components/footer.js
@@ -182,8 +182,8 @@ class Footer extends ImmutablePureComponent {
     return (
       <div className='picture-in-picture__footer'>
         <IconButton className='status__action-bar-button' title={replyTitle} icon={status.get('in_reply_to_account_id') === status.getIn(['account', 'id']) ? 'reply' : replyIcon} onClick={this.handleReplyClick} counter={status.get('replies_count')} obfuscateCount />
-        <IconButton className={classNames('status__action-bar-button', { reblogPrivate })} disabled={!publicStatus && !reblogPrivate}  active={status.get('reblogged')} pressed={status.get('reblogged')} title={reblogTitle} icon='retweet' onClick={this.handleReblogClick} counter={status.get('reblogs_count')} />
-        <IconButton className='status__action-bar-button star-icon' animate active={status.get('favourited')} pressed={status.get('favourited')} title={intl.formatMessage(messages.favourite)} icon='star' onClick={this.handleFavouriteClick} counter={status.get('favourites_count')} />
+        <IconButton className={classNames('status__action-bar-button', { reblogPrivate })} disabled={!publicStatus && !reblogPrivate}  active={status.get('reblogged')} title={reblogTitle} icon='retweet' onClick={this.handleReblogClick} counter={status.get('reblogs_count')} />
+        <IconButton className='status__action-bar-button star-icon' animate active={status.get('favourited')} title={intl.formatMessage(messages.favourite)} icon='star' onClick={this.handleFavouriteClick} counter={status.get('favourites_count')} />
         {withOpenButton && <IconButton className='status__action-bar-button' title={intl.formatMessage(messages.open)} icon='external-link' onClick={this.handleOpenClick} href={status.get('url')} />}
       </div>
     );
diff --git a/app/javascript/mastodon/features/status/index.js b/app/javascript/mastodon/features/status/index.js
index c0ba1f2d61..cb67944c94 100644
--- a/app/javascript/mastodon/features/status/index.js
+++ b/app/javascript/mastodon/features/status/index.js
@@ -619,7 +619,7 @@ class Status extends ImmutablePureComponent {
           showBackButton
           multiColumn={multiColumn}
           extraButton={(
-            <button type='button' className='column-header__button' title={intl.formatMessage(status.get('hidden') ? messages.revealAll : messages.hideAll)} aria-label={intl.formatMessage(status.get('hidden') ? messages.revealAll : messages.hideAll)} onClick={this.handleToggleAll} aria-pressed={status.get('hidden') ? 'false' : 'true'}><Icon id={status.get('hidden') ? 'eye-slash' : 'eye'} /></button>
+            <button type='button' className='column-header__button' title={intl.formatMessage(status.get('hidden') ? messages.revealAll : messages.hideAll)} aria-label={intl.formatMessage(status.get('hidden') ? messages.revealAll : messages.hideAll)} onClick={this.handleToggleAll}><Icon id={status.get('hidden') ? 'eye-slash' : 'eye'} /></button>
           )}
         />