Index: trunk/src_plugins/sketch_route/cdt/cdt.c
===================================================================
--- trunk/src_plugins/sketch_route/cdt/cdt.c	(revision 17773)
+++ trunk/src_plugins/sketch_route/cdt/cdt.c	(revision 17774)
@@ -679,7 +679,7 @@
 			POINTLIST_FOREACH(p, polygon)
 				if (p != t->p[0] && p != t->p[1] && p != t->p[2] && is_point_in_circumcircle(p, t)) {
 					for (i = 0; i < 3; i++) {
-						if (t->p[i] != edge->endp[0] && t->p[i] != edge->endp[1])
+						if (t->p[i] != e->endp[0] && t->p[i] != e->endp[1])
 							polygon = pointlist_prepend(polygon, &t->p[i]);
 						if (t->e[i] != e)
 							border_edges = edgelist_prepend(border_edges, &t->e[i]);