Index: draw_ly_spec.c
===================================================================
--- draw_ly_spec.c	(revision 19377)
+++ draw_ly_spec.c	(revision 19378)
@@ -197,7 +197,7 @@
 {
 	int count = 0;
 	pcb_layergrp_id_t gid, goutid;
-	pcb_layergrp_t *g, *goutl = NULL;
+	const pcb_layergrp_t *g, *goutl = NULL;
 	pcb_layer_t *uslot = NULL, *pslot = NULL;
 	int uscore = 0, pscore = 0;
 	int plated, unplated;