diff --git a/sys/dev/drm2/drm_modes.c b/sys/dev/drm2/drm_modes.c
index a2dbbdd..abbcb56 100644
--- a/sys/dev/drm2/drm_modes.c
+++ b/sys/dev/drm2/drm_modes.c
@@ -901,6 +901,11 @@ static int drm_mode_compare(void *priv, struct list_head *lh_a, struct list_head
 	diff = b->hdisplay * b->vdisplay - a->hdisplay * a->vdisplay;
 	if (diff)
 		return diff;
+
+	diff = b->vrefresh - a->vrefresh;
+	if (diff)
+		return diff;
+
 	diff = b->clock - a->clock;
 	return diff;
 }