diff --git a/boxes/generators/roundedbox.py b/boxes/generators/roundedbox.py
index 008a2db..86ab944 100644
--- a/boxes/generators/roundedbox.py
+++ b/boxes/generators/roundedbox.py
@@ -35,6 +35,7 @@ With lid:
     def __init__(self):
         boxes.Boxes.__init__(self)
         self.addSettingsArgs(boxes.edges.FingerJointSettings)
+        self.addSettingsArgs(boxes.edges.DoveTailSettings)
         self.addSettingsArgs(boxes.edges.FlexSettings)            
         self.buildArgParser("x", "y", "outside", sh="100.0")
         self.argparser.add_argument(