Index: undo.c
===================================================================
--- undo.c	(revision 4763)
+++ undo.c	(revision 4764)
@@ -1409,7 +1409,7 @@
 			break;
 		case PCB_TYPE_LINE:
 		case PCB_TYPE_ELEMENT_LINE:
-			undo->Data.Size = ((LineTypePtr) ptr2)->Thickness;
+			undo->Data.Size = ((pcb_line_t *) ptr2)->Thickness;
 			break;
 		case PCB_TYPE_TEXT:
 		case PCB_TYPE_ELEMENT_NAME:
@@ -1441,7 +1441,7 @@
 			undo->Data.Size = ((PinTypePtr) ptr2)->Clearance;
 			break;
 		case PCB_TYPE_LINE:
-			undo->Data.Size = ((LineTypePtr) ptr2)->Clearance;
+			undo->Data.Size = ((pcb_line_t *) ptr2)->Clearance;
 			break;
 		case PCB_TYPE_PAD:
 			undo->Data.Size = ((PadTypePtr) ptr2)->Clearance;