diff --git a/src/spicelib/devices/bsim3/b3mpar.c b/src/spicelib/devices/bsim3/b3mpar.c
index c4af0117d..94ec9a2dd 100644
--- a/src/spicelib/devices/bsim3/b3mpar.c
+++ b/src/spicelib/devices/bsim3/b3mpar.c
@@ -1496,7 +1496,7 @@ BSIM3mParam(int param, IFvalue *value, GENmodel *inMod)
             break;
 
         case  BSIM3_MOD_TNOM :
-            mod->BSIM3tnom = value->rValue;
+            mod->BSIM3tnom = value->rValue + CONSTCtoK;
             mod->BSIM3tnomGiven = TRUE;
             break;
         case  BSIM3_MOD_CGSO :
diff --git a/src/spicelib/devices/bsim3/b3set.c b/src/spicelib/devices/bsim3/b3set.c
index 879351250..c99456249 100644
--- a/src/spicelib/devices/bsim3/b3set.c
+++ b/src/spicelib/devices/bsim3/b3set.c
@@ -756,9 +756,7 @@ IFuid tmpName;
 
         /* unit degree celcius */
         if (!model->BSIM3tnomGiven)  
-	    model->BSIM3tnom = ckt->CKTnomTemp; 
-        else
-            model->BSIM3tnom = model->BSIM3tnom + 273.15;    
+	    model->BSIM3tnom = ckt->CKTnomTemp;   
         if (!model->BSIM3LintGiven)  
            model->BSIM3Lint = 0.0;
         if (!model->BSIM3LlGiven)