diff --git a/src/include/ngspice/cktdefs.h b/src/include/ngspice/cktdefs.h
index 5e907fb41..f129016a9 100644
--- a/src/include/ngspice/cktdefs.h
+++ b/src/include/ngspice/cktdefs.h
@@ -296,7 +296,7 @@ struct CKTcircuit {
 extern int ACan(CKTcircuit *, int);
 extern int ACaskQuest(CKTcircuit *, JOB *, int , IFvalue *);
 extern int ACsetParm(CKTcircuit *, JOB *, int , IFvalue *);
-extern int CKTacDump(CKTcircuit *, double , void *);
+extern int CKTacDump(CKTcircuit *, double , runDesc *);
 extern int CKTacLoad(CKTcircuit *);
 extern int CKTaccept(CKTcircuit *);
 extern int CKTacct(CKTcircuit *, JOB *, int , IFvalue *);
@@ -316,7 +316,7 @@ extern int CKTdltMod(CKTcircuit *, GENmodel *);
 extern int CKTdltNNum(CKTcircuit *, int);
 extern int CKTdltNod(CKTcircuit *, CKTnode *);
 extern int CKTdoJob(CKTcircuit *, int , TSKtask *);
-extern void CKTdump(CKTcircuit *, double, void *);
+extern void CKTdump(CKTcircuit *, double, runDesc *);
 extern int CKTsoaInit(void);
 extern int CKTsoaCheck(CKTcircuit *);
 #ifdef CIDER
diff --git a/src/spicelib/analysis/cktacdum.c b/src/spicelib/analysis/cktacdum.c
index 9a930e080..759c1880d 100644
--- a/src/spicelib/analysis/cktacdum.c
+++ b/src/spicelib/analysis/cktacdum.c
@@ -17,7 +17,7 @@ Author: 1985 Thomas L. Quarles
 
 
 int
-CKTacDump(CKTcircuit *ckt, double freq, void *plot)
+CKTacDump(CKTcircuit *ckt, double freq, runDesc *plot)
 {
     double *rhsold;
     double *irhsold;
diff --git a/src/spicelib/analysis/cktdump.c b/src/spicelib/analysis/cktdump.c
index 2c689331f..cbd1737c5 100644
--- a/src/spicelib/analysis/cktdump.c
+++ b/src/spicelib/analysis/cktdump.c
@@ -30,7 +30,7 @@ TODO:
 #endif
 
 void
-CKTdump(CKTcircuit *ckt, double ref, void *plot)
+CKTdump(CKTcircuit *ckt, double ref, runDesc *plot)
 {
     IFvalue refData;
     IFvalue valData;