Index: draw_ly_spec.c
===================================================================
--- draw_ly_spec.c	(revision 27762)
+++ draw_ly_spec.c	(revision 27763)
@@ -283,7 +283,7 @@
 	pcb_board_count_slots(PCB, &plated, &unplated, info->drawn_area);
 
 	if ((uslot != NULL) && (uslot->meta.real.vis)) {
-		if (pcb_layer_gui_set_glayer(PCB, uslot->meta.real.grp, unplated > 0, &info->xform)) {
+		if (pcb_layer_gui_set_glayer(PCB, uslot->meta.real.grp, unplated <= 0, &info->xform)) {
 			pcb_render->set_drawing_mode(pcb_render, PCB_HID_COMP_RESET, pcb_draw_out.direct, info->drawn_area);
 			pcb_render->set_drawing_mode(pcb_render, PCB_HID_COMP_POSITIVE, pcb_draw_out.direct, info->drawn_area);
 			pcb_draw_pstk_slots(info, uslot->meta.real.grp, PCB_PHOLE_UNPLATED | PCB_PHOLE_BB);
@@ -292,7 +292,7 @@
 		}
 	}
 	if ((pslot != NULL) && (pslot->meta.real.vis)) {
-		if (pcb_layer_gui_set_glayer(PCB, pslot->meta.real.grp, plated > 0, &info->xform)) {
+		if (pcb_layer_gui_set_glayer(PCB, pslot->meta.real.grp, plated <= 0, &info->xform)) {
 			pcb_render->set_drawing_mode(pcb_render, PCB_HID_COMP_RESET, pcb_draw_out.direct, info->drawn_area);
 			pcb_render->set_drawing_mode(pcb_render, PCB_HID_COMP_POSITIVE, pcb_draw_out.direct, info->drawn_area);
 			pcb_draw_pstk_slots(info, pslot->meta.real.grp, PCB_PHOLE_PLATED | PCB_PHOLE_BB);