diff --git a/python/isarnproject/sketches/spark/tdigest.py b/python/isarnproject/sketches/spark/tdigest.py
index 893a961..c6c9938 100644
--- a/python/isarnproject/sketches/spark/tdigest.py
+++ b/python/isarnproject/sketches/spark/tdigest.py
@@ -197,7 +197,7 @@ def module(cls):
 
     @classmethod
     def scalaUDT(cls):
-        return "org.apache.spark.isarnproject.sketches.udtdev.TDigestUDT"
+        return "org.apache.spark.isarnproject.sketches.tdigest.udt.TDigestUDT"
 
     def simpleString(self):
         return "tdigest"