diff --git a/pyxpcm/models.py b/pyxpcm/models.py
index b943ffa..ab5a4b2 100644
--- a/pyxpcm/models.py
+++ b/pyxpcm/models.py
@@ -49,7 +49,7 @@ class PCMFeatureError(Exception):
 class PCMClassError(Exception):
     """Exception raised when classes not correct"""
 
-class pcm(object):
+class pcm(BaseEstimator):
     """Profile Classification Model class constructor
 
         Consume and return :mod:`xarray` objects