diff --git a/boxes/edges.py b/boxes/edges.py
index bd02ba4..8fd12bb 100644
--- a/boxes/edges.py
+++ b/boxes/edges.py
@@ -724,6 +724,7 @@ class CrossingFingerHoleEdge(Edge):
     """Edge with holes for finger joints 90° above"""
 
     description = "Edge (orthogonal Finger Joint Holes)"
+    char = '|'
 
     def __init__(self, boxes, height, fingerHoles=None, **kw):
         super(CrossingFingerHoleEdge, self).__init__(boxes, None, **kw)