diff --git a/interp/grid/DDD.py b/interp/grid/DDD.py
index 8e2467e..977fe6d 100644
--- a/interp/grid/DDD.py
+++ b/interp/grid/DDD.py
@@ -1,15 +1,9 @@
-from interp.grid.delaunay import grid as basegrid
+from interp.grid.delaunay import dgrid as basegrid
 from interp.tools import exact_func_3D, log
 
 import numpy as np
 
-
-class grid(basegrid):
-  def __init__(self, verts, q):
-    basegrid.__init__(self, verts, q)
-
-
-class rect_grid(grid):
+class rect_grid(basegrid):
   def __init__(self, xres = 5, yres = 5, zres = 5):
     xmin = -1.0
     xmax =  1.0
@@ -37,7 +31,7 @@ class rect_grid(grid):
           cur_z = zmin + (z * zdel)
           verts.append([cur_x, cur_y, cur_z])
           q.append(exact_func_3D((cur_x, cur_y, cur_z)))
-    grid.__init__(self, verts, q)
+    basegrid.__init__(self, verts, q)
 
 
 
@@ -62,7 +56,7 @@ class random_grid(rect_grid):
 
       verts.append([cur_x, cur_y, cur_z])
       q.append(exact_func_3D((cur_x, cur_y, cur_z)))
-    grid.__init__(self, verts, q)
+    rect_grid.__init__(self, verts, q)
 
     self.verts = np.array(self.verts)
     self.q      = np.array(self.q)