diff --git a/pyFTS/partitioners/Grid.py b/pyFTS/partitioners/Grid.py
index 2b1b14f..ee18bb6 100644
--- a/pyFTS/partitioners/Grid.py
+++ b/pyFTS/partitioners/Grid.py
@@ -22,11 +22,12 @@ class GridPartitioner(partitioner.Partitioner):
 
         kwargs = {'type': self.type, 'variable': self.variable}
 
-        dlen = self.max - self.min
-        partlen = dlen / self.partitions
+        #dlen = self.max - self.min
+        #partlen = dlen / self.partitions
 
         count = 0
-        for c in np.arange(self.min, self.max, partlen):
+        centers, partlen = np.linspace(self.min, self.max, self.partitions, retstep=True)
+        for c in centers:
             _name = self.get_name(count)
             if self.membership_function == Membership.trimf:
                 sets[_name] = FuzzySet.FuzzySet(_name, Membership.trimf, [c - partlen, c, c + partlen],c,**kwargs)