Index: rats_act.c
===================================================================
--- rats_act.c	(revision 2502)
+++ rats_act.c	(revision 2503)
@@ -99,7 +99,7 @@
 			}
 			END_LOOP;
 			if (shorty) {
-				AddObjectToFlagUndoList(RATLINE_TYPE, shorty, shorty, shorty);
+				AddObjectToFlagUndoList(PCB_TYPE_RATLINE, shorty, shorty, shorty);
 				SET_FLAG(SELECTEDFLAG, shorty);
 				DrawRat(shorty);
 				Draw();