diff --git a/app/src/main/java/live/mehiz/mpvkt/ui/player/PlayerViewModel.kt b/app/src/main/java/live/mehiz/mpvkt/ui/player/PlayerViewModel.kt
index 4b7c080..ec8a9f4 100644
--- a/app/src/main/java/live/mehiz/mpvkt/ui/player/PlayerViewModel.kt
+++ b/app/src/main/java/live/mehiz/mpvkt/ui/player/PlayerViewModel.kt
@@ -204,7 +204,7 @@ class PlayerViewModel(
   }
 
   fun updateChapter(index: Long) {
-    if (chapters.isEmpty()) return
+    if (chapters.isEmpty() || index == -1L) return
     _currentChapter.update { chapters[index.toInt()] }
   }