Index: trunk/src_plugins/renumber/renumber.c
===================================================================
--- trunk/src_plugins/renumber/renumber.c	(revision 19475)
+++ trunk/src_plugins/renumber/renumber.c	(revision 19476)
@@ -289,7 +289,7 @@
 				is[c_cnt] = pcb_strdup(tmps);
 				c_cnt++;
 
-				pcb_undo_add_obj_to_change_name(PCB_OBJ_SUBC, NULL, NULL, subc_list[i], or_empty(subc_list[i]->refdes));
+				pcb_undo_add_obj_to_change_name(PCB_OBJ_SUBC, NULL, NULL, subc_list[i], (char *)or_empty(subc_list[i]->refdes));
 
 				pcb_chg_obj_name(PCB_OBJ_SUBC, subc_list[i], NULL, NULL, tmps);
 				changed = pcb_true;
Index: trunk/src_plugins/renumber/renumberblock.c
===================================================================
--- trunk/src_plugins/renumber/renumberblock.c	(revision 19475)
+++ trunk/src_plugins/renumber/renumberblock.c	(revision 19476)
@@ -68,7 +68,7 @@
 		memcpy(new_ref, old_ref, refdes_split - old_ref);
 		strcpy(new_ref + (refdes_split - old_ref), num_buf);
 
-		pcb_undo_add_obj_to_change_name(PCB_OBJ_SUBC, NULL, NULL, subc, subc->refdes);
+		pcb_undo_add_obj_to_change_name(PCB_OBJ_SUBC, NULL, NULL, subc, (char *)subc->refdes);
 
 		pcb_chg_obj_name(PCB_OBJ_SUBC, subc, subc, subc, new_ref);
 	}