diff --git a/app/javascript/mastodon/features/video/index.tsx b/app/javascript/mastodon/features/video/index.tsx
index 6c6b34a4e11..fbbe298c290 100644
--- a/app/javascript/mastodon/features/video/index.tsx
+++ b/app/javascript/mastodon/features/video/index.tsx
@@ -829,7 +829,7 @@ export const Video: React.FC<{
             role='button'
             tabIndex={0}
             aria-label={alt}
-            title={alt}
+            title={fullscreen ? undefined : alt}
             lang={lang}
             onClick={handleClick}
             onKeyDownCapture={handleVideoKeyDown}