diff --git a/rhinopython/SampleCurveDirConduit.py b/rhinopython/SampleCurveDirConduit.py
index 72e8348b..2b681612 100644
--- a/rhinopython/SampleCurveDirConduit.py
+++ b/rhinopython/SampleCurveDirConduit.py
@@ -15,6 +15,7 @@ class SampleCurveDirConduit(Rhino.Display.DisplayConduit):
     
     # Initializer
     def __init__(self):
+        super().__init__()
         self.m_curve = None
         self.m_arrow_count = 3