diff --git a/audio/out/internal.h b/audio/out/internal.h
index 6eb7016f2d..c3ed9dca98 100644
--- a/audio/out/internal.h
+++ b/audio/out/internal.h
@@ -68,7 +68,6 @@ struct ao {
     int buffer;
     double def_buffer;
     struct buffer_state *buffer_state;
-    void *api_priv;
 };
 
 void init_buffer_pre(struct ao *ao);