diff --git a/sky130/custom/models/diode.spice b/sky130/custom/models/diode.spice
index 81bee35..67744d6 100644
--- a/sky130/custom/models/diode.spice
+++ b/sky130/custom/models/diode.spice
@@ -1,9 +1,9 @@
 * For diodes called as a subcircuit
 * (backwards compatible with earlier PDK version)
 .subckt sky130_fd_pr__diode_pw2nd N P a=0 p=0
-D0 N P sky130_fd_pr__diode_pw2nd_05v5 area=a
+D0 N P sky130_fd_pr__diode_pw2nd_05v5 area=a pj=p
 .ends
 * (corresponds to current PDK)
-.subckt sky130_fd_pr__diode_pw2nd_05v5 N P area=0
-D0 N P sky130_fd_pr__diode_pw2nd_05v5 area=area
+.subckt sky130_fd_pr__diode_pw2nd_05v5 N P area=0 perimeter=0
+D0 N P sky130_fd_pr__diode_pw2nd_05v5 area=area pj=perimeter
 .ends