Index: undo.c
===================================================================
--- undo.c	(revision 4874)
+++ undo.c	(revision 4875)
@@ -528,8 +528,8 @@
 		swap = pin->Flags;
 
 		must_redraw = 0;
-		f1 = MaskFlags(pin->Flags, ~DRAW_FLAGS);
-		f2 = MaskFlags(Entry->Data.Flags, ~DRAW_FLAGS);
+		f1 = pcb_flag_mask(pin->Flags, ~DRAW_FLAGS);
+		f2 = pcb_flag_mask(Entry->Data.Flags, ~DRAW_FLAGS);
 
 		if (!FLAGS_EQUAL(f1, f2))
 			must_redraw = 1;