diff --git a/app/javascript/mastodon/features/account_gallery/components/media_item.js b/app/javascript/mastodon/features/account_gallery/components/media_item.js
index f16fe07f1d551cca5e55a41d89670ac0ccaa7438..13fd7fe03db2c6a34fbfdae4e7d5e9288dc5fadd 100644
--- a/app/javascript/mastodon/features/account_gallery/components/media_item.js
+++ b/app/javascript/mastodon/features/account_gallery/components/media_item.js
@@ -104,6 +104,7 @@ export default class MediaItem extends ImmutablePureComponent {
           <video
             className='media-gallery__item-gifv-thumbnail'
             aria-label={attachment.get('description')}
+            title={attachment.get('description')}
             role='application'
             src={attachment.get('url')}
             onMouseEnter={this.handleMouseEnter}