diff --git a/src/frontend/inp.c b/src/frontend/inp.c
index 26403782e..1fc113d04 100644
--- a/src/frontend/inp.c
+++ b/src/frontend/inp.c
@@ -748,7 +748,7 @@ inp_spsource(FILE *fp, bool comfile, char *filename, bool intfile)
             /* Now the circuit is defined, so generate the parse trees */
             inp_parse_temper_trees();
             /* Get the actual data for model and device instance parameters */
-            inp_evaluate_temper();
+            inp_evaluate_temper(ft_curckt);
         }
 
        /* linked list dbs is used to store the "save" or .save data (defined in breakp2.c),
@@ -1583,7 +1583,7 @@ inp_parse_temper_trees(void)
 
 
 void
-inp_evaluate_temper(void)
+inp_evaluate_temper(struct circ *circ)
 {
     struct pt_temper *d;
     double result;
@@ -1598,10 +1598,10 @@ inp_evaluate_temper(void)
 
     for(d = modtlist; d; d = d->next) {
         char *name = d->wl->wl_word;
-        INPretrieve(&name, ft_curckt->ci_symtab);
+        INPretrieve(&name, circ->ci_symtab);
         /* only evaluate models which have been entered into the
            hash table ckt->MODnameHash */
-        if (ft_sim->findModel (ft_curckt->ci_ckt, name) == NULL)
+        if (ft_sim->findModel (circ->ci_ckt, name) == NULL)
             continue;
         IFeval((IFparseTree *) d->pt, 1e-12, &result, NULL, NULL);
         if (d->wlend->wl_word)
diff --git a/src/include/ngspice/cktdefs.h b/src/include/ngspice/cktdefs.h
index aea7f120a..0f151c7ed 100644
--- a/src/include/ngspice/cktdefs.h
+++ b/src/include/ngspice/cktdefs.h
@@ -449,6 +449,7 @@ extern int NIpred(CKTcircuit *ckt);
 extern IFfrontEnd *SPfrontEnd;
 extern bool expr_w_temper;
 
-extern void inp_evaluate_temper(void);
+struct circ;
+extern void inp_evaluate_temper(struct circ *ckt);
 
 #endif
diff --git a/src/spicelib/analysis/cktdojob.c b/src/spicelib/analysis/cktdojob.c
index 10e3a8368..11f282829 100644
--- a/src/spicelib/analysis/cktdojob.c
+++ b/src/spicelib/analysis/cktdojob.c
@@ -9,6 +9,7 @@ Modified: 2000 AlansFixes
 #include "ngspice/sperror.h"
 #include "ngspice/trandefs.h"
 #include "ngspice/cpextern.h"
+#include "ngspice/fteext.h"
 
 #include "analysis.h"
 
@@ -116,7 +117,7 @@ CKTdoJob(CKTcircuit *ckt, int reset, TSKtask *task)
     /* call altermod and alter on device and model parameters assembled in
        devtlist and modtlist (if using temper) because we have a new temperature */
     if (expr_w_temper)
-        inp_evaluate_temper();
+        inp_evaluate_temper(ft_curckt);
 
     error = 0;
 
diff --git a/src/spicelib/analysis/dctrcurv.c b/src/spicelib/analysis/dctrcurv.c
index 75f2bf9f9..ce7b30178 100644
--- a/src/spicelib/analysis/dctrcurv.c
+++ b/src/spicelib/analysis/dctrcurv.c
@@ -13,6 +13,7 @@ Modified: 1999 Paolo Nenzi
 #include "ngspice/cktdefs.h"
 #include "ngspice/const.h"
 #include "ngspice/sperror.h"
+#include "ngspice/fteext.h"
 
 #ifdef XSPICE
 #include "ngspice/evt.h"
@@ -144,7 +145,7 @@ DCtrCurv(CKTcircuit *ckt, int restart)
             job->TRCVvType[i] = TEMP_CODE;    /* Set the sweep type code */
             ckt->CKTtemp = job->TRCVvStart[i] + CONSTCtoK; /* Set the new circuit temp */
             if (expr_w_temper)
-                inp_evaluate_temper();
+                inp_evaluate_temper(ft_curckt);
             CKTtemp(ckt);
             goto found;
         }
@@ -277,7 +278,7 @@ DCtrCurv(CKTcircuit *ckt, int restart)
             } else if (job->TRCVvType[i] == TEMP_CODE) {
                 ckt->CKTtemp = job->TRCVvStart[i] + CONSTCtoK;
                 if (expr_w_temper)
-                    inp_evaluate_temper();
+                    inp_evaluate_temper(ft_curckt);
                 CKTtemp(ckt);
             } else if (job->TRCVvType[i] == rcode) {
                 ((RESinstance *)(job->TRCVvElt[i]))->RESresist =
@@ -471,7 +472,7 @@ DCtrCurv(CKTcircuit *ckt, int restart)
         } else if (job->TRCVvType[i] == TEMP_CODE) { /* temperature */
             ckt->CKTtemp += job->TRCVvStep[i];
             if (expr_w_temper)
-                inp_evaluate_temper();
+                inp_evaluate_temper(ft_curckt);
             CKTtemp(ckt);
         }
 
@@ -509,7 +510,7 @@ DCtrCurv(CKTcircuit *ckt, int restart)
         } else if (job->TRCVvType[i] == TEMP_CODE) {
             ckt->CKTtemp = job->TRCVvSave[i];
             if (expr_w_temper)
-                inp_evaluate_temper();
+                inp_evaluate_temper(ft_curckt);
             CKTtemp(ckt);
         }