diff --git a/video/out/vo.c b/video/out/vo.c
index 5d6bab4aab..251f32e6af 100644
--- a/video/out/vo.c
+++ b/video/out/vo.c
@@ -567,7 +567,7 @@ static bool render_frame(struct vo *vo)
 
     in->dropped_frame = duration >= 0 && end_time < next_vsync;
     in->dropped_frame &= !(vo->driver->caps & VO_CAP_FRAMEDROP);
-    in->dropped_frame &= !(vo->global->opts->frame_dropping & 1);
+    in->dropped_frame &= (vo->global->opts->frame_dropping & 1);
     // Even if we're hopelessly behind, rather degrade to 10 FPS playback,
     // instead of just freezing the display forever.
     in->dropped_frame &= mp_time_us() - in->last_flip < 100 * 1000;