diff --git a/compiler/precharge.py b/compiler/precharge.py
index 5dae0e14..d2a64678 100644
--- a/compiler/precharge.py
+++ b/compiler/precharge.py
@@ -128,7 +128,7 @@ class precharge(pgate.pgate):
         """Adds a nwell tap to connect to the vdd rail"""
         # adds the contact from active to metal1
         well_contact_pos = self.upper_pmos1_inst.get_pin("D").center().scale(1,0) \
-                           + vector(0, self.upper_pmos1_pos.y + self.pmos.height + drc["well_extend_active"])
+                           + vector(0, self.upper_pmos1_inst.uy() + contact.well.height/2 + drc["well_extend_active"])
         self.add_contact_center(layers=("active", "contact", "metal1"),
                                 offset=well_contact_pos,
                                 implant_type="n",