diff --git a/compiler/modules/dff_buf_array.py b/compiler/modules/dff_buf_array.py
index 67c7522f..4f2140c4 100644
--- a/compiler/modules/dff_buf_array.py
+++ b/compiler/modules/dff_buf_array.py
@@ -70,11 +70,6 @@ class dff_buf_array(design.design):
                                   inv2_size=self.inv2_size)
         self.add_mod(self.dff)
 
-        well_spacing = max(self.nwell_space,
-                           self.pwell_space,
-                           self.pwell_to_nwell)
-
-        self.dff_pitch = self.dff.width + well_spacing + self.well_extend_active
 
     def create_dff_array(self):
         self.dff_insts={}
@@ -91,14 +86,21 @@ class dff_buf_array(design.design):
                                    "gnd"])
 
     def place_dff_array(self):
+
+        well_spacing = max(self.nwell_space,
+                           self.pwell_space,
+                           self.pwell_to_nwell)
+
+        dff_pitch = self.dff.width + well_spacing + self.well_extend_active
+        
         for row in range(self.rows):  
             for col in range(self.columns):
                 name = "Xdff_r{0}_c{1}".format(row,col)
                 if (row % 2 == 0):
-                    base = vector(col*self.dff_pitch,row*self.dff.height)
+                    base = vector(col*dff_pitch,row*self.dff.height)
                     mirror = "R0"
                 else:
-                    base = vector(col*self.dff_pitch,(row+1)*self.dff.height)
+                    base = vector(col*dff_pitch,(row+1)*self.dff.height)
                     mirror = "MX"
                 self.dff_insts[row,col].place(offset=base, 
                                               mirror=mirror)