diff --git a/app/src/main/java/com/futo/platformplayer/fragment/mainactivity/main/VideoDetailFragment.kt b/app/src/main/java/com/futo/platformplayer/fragment/mainactivity/main/VideoDetailFragment.kt
index faf20a79..14881672 100644
--- a/app/src/main/java/com/futo/platformplayer/fragment/mainactivity/main/VideoDetailFragment.kt
+++ b/app/src/main/java/com/futo/platformplayer/fragment/mainactivity/main/VideoDetailFragment.kt
@@ -115,6 +115,7 @@ class VideoDetailFragment : MainFragment {
     @SuppressLint("SourceLockedOrientationActivity")
     fun updateOrientation() {
         val a = activity ?: return
+        // only applies to small windows
         val isFullScreenPortraitAllowed = Settings.instance.playback.fullscreenPortrait;
         val isReversePortraitAllowed = Settings.instance.playback.reversePortrait;
         val rotationLock = StatePlayer.instance.rotationLock