Index: src_plugins/lib_gtk_common/wt_layersel.c
===================================================================
--- src_plugins/lib_gtk_common/wt_layersel.c	(revision 8709)
+++ src_plugins/lib_gtk_common/wt_layersel.c	(revision 8710)
@@ -554,7 +554,7 @@
 		build_group_finish(lsg);
 	}
 
-	{ /* UI layers */
+	if (vtlayer_len(&pcb_uilayer) > 0) { /* UI layers */
 		pcb_gtk_ls_grp_t *lsg = &ls->lsg_ui;
 
 		ls->grp_ui.len = vtlayer_len(&pcb_uilayer);