diff --git a/pyFTS/partitioners/Huarng.py b/pyFTS/partitioners/Huarng.py
index d322a7e..ad39643 100644
--- a/pyFTS/partitioners/Huarng.py
+++ b/pyFTS/partitioners/Huarng.py
@@ -36,6 +36,7 @@ def build(self, data):
 
         dlen = self.max - self.min
         npart = math.ceil(dlen / base)
+        self.partitions = npart
         partition = math.ceil(self.min)
         for c in range(npart):
             _name = self.get_name(c)