diff --git a/src/spicelib/devices/vdmos/vdmos.c b/src/spicelib/devices/vdmos/vdmos.c
index d82ee3e91..8169c712c 100644
--- a/src/spicelib/devices/vdmos/vdmos.c
+++ b/src/spicelib/devices/vdmos/vdmos.c
@@ -122,7 +122,6 @@ IFparm VDMOSmPTable[] = { /* model parameters */
  IP("vdmos",  VDMOS_MOD_DMOS,  IF_REAL,   "DMOS transistor"),
 
 /* MOS1 */
- IOPR("vt0",  VDMOS_MOD_VTO,   IF_REAL,   "Threshold voltage"),
  IOP("gamma", VDMOS_MOD_GAMMA, IF_REAL,   "Bulk threshold parameter"),
  IOPA("cbd",  VDMOS_MOD_CBD,   IF_REAL,   "B-D junction capacitance"),
  IOPA("cbs",  VDMOS_MOD_CBS,   IF_REAL,   "B-S junction capacitance"),