Index: trunk/src/layer_grp.c
===================================================================
--- trunk/src/layer_grp.c	(revision 28233)
+++ trunk/src/layer_grp.c	(revision 28234)
@@ -1081,9 +1081,9 @@
 	{"top_copper",          PCB_LYT_TOP | PCB_LYT_COPPER,    NULL, 0, 0},
 	{"any_internal_copper", PCB_LYT_INTERN | PCB_LYT_COPPER, NULL, 0, 0},
 	{"bottom_copper",       PCB_LYT_BOTTOM | PCB_LYT_COPPER, NULL, 0, 0},
-	{"bottom_mask",         PCB_LYT_BOTTOM | PCB_LYT_MASK,   NULL, PCB_LYC_SUB | PCB_LYC_AUTO, 1},
-	{"bottom_silk",         PCB_LYT_BOTTOM | PCB_LYT_SILK,   NULL, PCB_LYC_AUTO, 1},
-	{"bottom_paste",        PCB_LYT_BOTTOM | PCB_LYT_PASTE,  NULL, PCB_LYC_AUTO, 1},
+	{"bottom_mask",         PCB_LYT_BOTTOM | PCB_LYT_MASK,   NULL, PCB_LYC_SUB | PCB_LYC_AUTO, PCB_DFLGMAP_FORCE_END},
+	{"bottom_silk",         PCB_LYT_BOTTOM | PCB_LYT_SILK,   NULL, PCB_LYC_AUTO, PCB_DFLGMAP_FORCE_END},
+	{"bottom_paste",        PCB_LYT_BOTTOM | PCB_LYT_PASTE,  NULL, PCB_LYC_AUTO, PCB_DFLGMAP_FORCE_END},
 
 	{"pmech",               PCB_LYT_MECH,                    "proute", PCB_LYC_AUTO, 0},
 	{"umech",               PCB_LYT_MECH,                    "uroute", PCB_LYC_AUTO, 0},
@@ -1162,7 +1162,7 @@
 			free(grp->name);
 		}
 		else
-			grp = pcb_get_grp_new_intern_(pcb, 1, m->force_end);
+			grp = pcb_get_grp_new_intern_(pcb, 1, (m->flags & PCB_DFLGMAP_FORCE_END));
 		pcb_layergrp_set_dflgly(pcb, grp, m, NULL, NULL);
 	}
 	inhibit_notify--;
Index: trunk/src/layer_grp.h
===================================================================
--- trunk/src/layer_grp.h	(revision 28233)
+++ trunk/src/layer_grp.h	(revision 28234)
@@ -260,7 +260,9 @@
 	pcb_layer_type_t lyt;
 	const char *purpose;
 	pcb_layer_combining_t comb;
-	int force_end;
+	enum { /* bitfield */
+		PCB_DFLGMAP_FORCE_END = 1
+	} flags;
 } pcb_dflgmap_t;
 
 extern const pcb_dflgmap_t pcb_dflgmap[]; /* the whole map, without doc layers */