diff --git a/sbin/geom/class/part/geom_part.c b/sbin/geom/class/part/geom_part.c
index 30db6c00d07d..f70b4879260d 100644
--- a/sbin/geom/class/part/geom_part.c
+++ b/sbin/geom/class/part/geom_part.c
@@ -88,7 +88,7 @@ struct g_command class_commands[] = {
 		G_OPT_SENTINEL },
 	  "geom", NULL
 	},
-	{ "show", 0, gpart_show, G_NULL_OPTS, "[geom ...]", NULL },
+	{ "show", 0, gpart_show, G_NULL_OPTS, NULL, "[geom ...]" },
 	{ "undo", 0, NULL, G_NULL_OPTS, "geom", NULL },
 	G_CMD_SENTINEL
 };