diff --git a/lib/linux-x86_64/libao-play-async.so b/lib/linux-x86_64/libao-play-async.so
index 126ce84..395a023 100755
Binary files a/lib/linux-x86_64/libao-play-async.so and b/lib/linux-x86_64/libao-play-async.so differ
diff --git a/libao/c/ao-play-async/ao_playasync.c b/libao/c/ao-play-async/ao_playasync.c
index a3c8966..9747492 100644
--- a/libao/c/ao-play-async/ao_playasync.c
+++ b/libao/c/ao-play-async/ao_playasync.c
@@ -270,7 +270,7 @@ double ao_music_duration_async(void *ao_handle)
 {
     AO_Handle *h = (AO_Handle *) ao_handle;
     MUTEX_LOCK(h->mutex);
-    double duration = h->at_second;
+    double duration = h->music_duration;
     MUTEX_UNLOCK(h->mutex);
     return duration;
 }