diff --git a/sys/dev/drm2/drm_crtc_helper.c b/sys/dev/drm2/drm_crtc_helper.c
index b6e4bd81abf1..411a1f6cb9a1 100644
--- a/sys/dev/drm2/drm_crtc_helper.c
+++ b/sys/dev/drm2/drm_crtc_helper.c
@@ -189,13 +189,14 @@ int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
 	if (list_empty(&connector->modes))
 		return 0;
 
+	list_for_each_entry(mode, &connector->modes, head)
+		mode->vrefresh = drm_mode_vrefresh(mode);
+
 	drm_mode_sort(&connector->modes);
 
 	DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id,
 			drm_get_connector_name(connector));
 	list_for_each_entry(mode, &connector->modes, head) {
-		mode->vrefresh = drm_mode_vrefresh(mode);
-
 		drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
 		drm_mode_debug_printmodeline(mode);
 	}
diff --git a/sys/dev/drm2/drm_modes.c b/sys/dev/drm2/drm_modes.c
index 4df8cb12bc7e..5467be5ab44a 100644
--- a/sys/dev/drm2/drm_modes.c
+++ b/sys/dev/drm2/drm_modes.c
@@ -927,6 +927,11 @@ 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;
 }