diff --git a/src/ui/window.rs b/src/ui/window.rs
index 5a75107..83c5b56 100644
--- a/src/ui/window.rs
+++ b/src/ui/window.rs
@@ -368,7 +368,9 @@ mod imp {
         }
 
         fn playlist_count(&self) -> i64 {
-            self.mpv.get_property::<i64>("playlist-count").unwrap()
+            let count = self.mpv.get_property::<i64>("playlist-count").unwrap();
+            assert_eq!(count as u32, self.playlist_model.n_items());
+            count
         }
 
         fn song(&self) -> Option<Song> {