diff --git a/src/spicelib/devices/bjt/bjt.c b/src/spicelib/devices/bjt/bjt.c
index fc86aa6c3..33374b14f 100644
--- a/src/spicelib/devices/bjt/bjt.c
+++ b/src/spicelib/devices/bjt/bjt.c
@@ -175,10 +175,13 @@ IFparm BJTmPTable[] = { /* model parameters */
  IOP("tnr1", BJT_MOD_TNR1, IF_REAL, "NR 1. temperature coefficient"),
  IOP("tnr2", BJT_MOD_TNR2, IF_REAL, "NR 2. temperature coefficient"),
  IOP("trb1", BJT_MOD_TRB1, IF_REAL, "RB 1. temperature coefficient"),
+ IOPR("trb", BJT_MOD_TRB1, IF_REAL, "RB 1. temperature coefficient"),
  IOP("trb2", BJT_MOD_TRB2, IF_REAL, "RB 2. temperature coefficient"),
  IOP("trc1", BJT_MOD_TRC1, IF_REAL, "RC 1. temperature coefficient"),
+ IOPR("trc", BJT_MOD_TRC1, IF_REAL, "RC 1. temperature coefficient"),
  IOP("trc2", BJT_MOD_TRC2, IF_REAL, "RC 2. temperature coefficient"),
  IOP("tre1", BJT_MOD_TRE1, IF_REAL, "RE 1. temperature coefficient"),
+ IOPR("tre", BJT_MOD_TRE1, IF_REAL, "RE 1. temperature coefficient"),
  IOP("tre2", BJT_MOD_TRE2, IF_REAL, "RE 2. temperature coefficient"),
  IOP("trm1", BJT_MOD_TRM1, IF_REAL, "RBM 1. temperature coefficient"),
  IOP("trm2", BJT_MOD_TRM2, IF_REAL, "RBM 2. temperature coefficient"),