Index: trunk/src/obj_arc.c
===================================================================
--- trunk/src/obj_arc.c	(revision 20170)
+++ trunk/src/obj_arc.c	(revision 20171)
@@ -71,7 +71,7 @@
 	arclist_remove(arc);
 	assert(layer->parent_type == PCB_PARENT_DATA);
 	pcb_obj_id_del(layer->parent.data, arc);
-	PCB_SET_PARENT(arc, layer, NULL);
+	PCB_CLEAR_PARENT(arc);
 }
 
 pcb_arc_t *pcb_arc_alloc(pcb_layer_t * layer)
Index: trunk/src/obj_line.c
===================================================================
--- trunk/src/obj_line.c	(revision 20170)
+++ trunk/src/obj_line.c	(revision 20171)
@@ -76,7 +76,7 @@
 	linelist_remove(line);
 	assert(layer->parent_type == PCB_PARENT_DATA);
 	pcb_obj_id_del(layer->parent.data, line);
-	PCB_SET_PARENT(line, layer, NULL);
+	PCB_CLEAR_PARENT(line);
 }
 
 pcb_line_t *pcb_line_alloc(pcb_layer_t * layer)
Index: trunk/src/obj_rat.c
===================================================================
--- trunk/src/obj_rat.c	(revision 20170)
+++ trunk/src/obj_rat.c	(revision 20171)
@@ -64,7 +64,7 @@
 	assert(rat->parent_type == PCB_PARENT_DATA);
 	ratlist_remove(rat);
 	pcb_obj_id_del(data, rat);
-	PCB_SET_PARENT(rat, data, NULL);
+	PCB_CLEAR_PARENT(rat);
 }
 
 pcb_rat_t *pcb_rat_alloc(pcb_data_t *data)
Index: trunk/src/obj_text.c
===================================================================
--- trunk/src/obj_text.c	(revision 20170)
+++ trunk/src/obj_text.c	(revision 20171)
@@ -75,7 +75,7 @@
 	textlist_remove(text);
 	assert(layer->parent_type == PCB_PARENT_DATA);
 	pcb_obj_id_del(layer->parent.data, text);
-	PCB_SET_PARENT(text, layer, NULL);
+	PCB_CLEAR_PARENT(text);
 }
 
 pcb_text_t *pcb_text_alloc(pcb_layer_t * layer)