diff --git a/app/javascript/mastodon/features/video/index.tsx b/app/javascript/mastodon/features/video/index.tsx
index 6721b5c96a2..ca5d07d7782 100644
--- a/app/javascript/mastodon/features/video/index.tsx
+++ b/app/javascript/mastodon/features/video/index.tsx
@@ -836,7 +836,7 @@ export const Video: React.FC<{
             role='button'
             tabIndex={0}
             aria-label={alt}
-            title={alt}
+            title={fullscreen ? undefined : alt}
             lang={lang}
             onClick={handleClick}
             onKeyDownCapture={handleVideoKeyDown}