diff --git a/grub-core/osdep/freebsd/getroot.c b/grub-core/osdep/freebsd/getroot.c
index ccc1d7028..b1e824495 100644
--- a/grub-core/osdep/freebsd/getroot.c
+++ b/grub-core/osdep/freebsd/getroot.c
@@ -338,8 +338,8 @@ grub_util_follow_gpart_up (const char *name, grub_disk_addr_t *off_out, char **n
 	    grub_util_follow_gpart_up (name_tmp, &off, name_out);
 	    free (name_tmp);
 	    LIST_FOREACH (config, &provider->lg_config, lg_config)
-	      if (strcasecmp (config->lg_name, "start") == 0)
-		off += strtoull (config->lg_val, 0, 10);
+	      if (strcasecmp (config->lg_name, "offset") == 0)
+		off += strtoull (config->lg_val, 0, 10) / provider->lg_sectorsize;
 	    if (off_out)
 	      *off_out = off;
 	    return;