diff --git a/boxes/edges.py b/boxes/edges.py
index 3e65f79..ccad26c 100644
--- a/boxes/edges.py
+++ b/boxes/edges.py
@@ -719,7 +719,7 @@ class FingerHoleEdge(BaseEdge):
         return self.fingerHoles.settings.edge_width + self.settings.thickness
 
 
-class CrossingFingerHoleEdge(BaseEdge):
+class CrossingFingerHoleEdge(Edge):
     """Edge with holes for finger joints 90° above"""
 
     description = "Edge (orthogonal Finger Joint Holes)"