diff --git a/interp/grid/DD.py b/interp/grid/DD.py
index b41b8fc..77efd53 100644
--- a/interp/grid/DD.py
+++ b/interp/grid/DD.py
@@ -1,11 +1,8 @@
 from interp.grid.delaunay import dgrid as basegrid
-
 from interp.tools import exact_func, log
 
 import numpy as np
 
-
-
 class rect_grid(basegrid):
   def __init__(self, xres = 5, yres = 5):
     xmin = -1.0
@@ -27,7 +24,7 @@ class rect_grid(basegrid):
         cur_y = ymin + (y * ydel)
         verts.append([cur_x, cur_y])
         q.append(exact_func((cur_x, cur_y)))
-    grid.__init__(self, verts, q)
+    basegrid.__init__(self, verts, q)
 
 
 class random_grid(rect_grid):
@@ -61,7 +58,7 @@ class random_grid(rect_grid):
 
       verts.append([cur_x, cur_y])
       q.append( exact_func( (cur_x, cur_y) ) )
-    grid.__init__(self, verts, q)
+    basegrid.__init__(self, verts, q)
 
     self.verts = np.array(self.verts)
     self.q      = np.array(self.q)