diff --git a/src/spicelib/devices/bjt/bjtext.h b/src/spicelib/devices/bjt/bjtext.h
index 708826477..8401dfc5c 100644
--- a/src/spicelib/devices/bjt/bjtext.h
+++ b/src/spicelib/devices/bjt/bjtext.h
@@ -28,7 +28,7 @@ extern int BJTtemp(GENmodel*,CKTcircuit*);
 extern int BJTtrunc(GENmodel*,CKTcircuit*,double*);
 extern int BJTdisto(int,GENmodel*,CKTcircuit*);
 extern int BJTnoise(int,int,GENmodel*,CKTcircuit*,Ndata*,double*);
-extern int BJTdSetup(GENmodel*, register CKTcircuit*);
+extern int BJTdSetup(GENmodel*, CKTcircuit*);
 extern int BJTsoaCheck(CKTcircuit *, GENmodel *);
 
 #endif
diff --git a/src/spicelib/devices/cpl/cplmpar.c b/src/spicelib/devices/cpl/cplmpar.c
index 1e094f079..0879b79bb 100644
--- a/src/spicelib/devices/cpl/cplmpar.c
+++ b/src/spicelib/devices/cpl/cplmpar.c
@@ -29,7 +29,7 @@ static void copy_coeffs(double **dst, IFvalue *value)
 int
 CPLmParam(int param, IFvalue *value, GENmodel *inModel)
 {
-    register CPLmodel *model = (CPLmodel *)inModel;
+    CPLmodel *model = (CPLmodel *)inModel;
     switch(param) {
         case CPL_R:
             copy_coeffs(& model->Rm, value);
diff --git a/src/spicelib/devices/txl/txlload.c b/src/spicelib/devices/txl/txlload.c
index 9926bf975..212fad344 100644
--- a/src/spicelib/devices/txl/txlload.c
+++ b/src/spicelib/devices/txl/txlload.c
@@ -670,7 +670,7 @@ expC(double ar,	double ai, double h, double *cr, double *ci)
 static int 
 multC(double ar, double	ai, double br, double bi, double *cr, double *ci)
 {
-	register double	tp;
+	double	tp;
 
 	tp = ar*br - ai*bi;
 	*ci = ar*bi + ai*br;
diff --git a/src/spicelib/devices/txl/txlmpar.c b/src/spicelib/devices/txl/txlmpar.c
index 7142d6724..7374d17de 100644
--- a/src/spicelib/devices/txl/txlmpar.c
+++ b/src/spicelib/devices/txl/txlmpar.c
@@ -16,7 +16,7 @@ Author: 1992 Charles Hough
 int
 TXLmParam(int param, IFvalue *value, GENmodel *inModel)
 {
-    register TXLmodel *model = (TXLmodel *)inModel;
+    TXLmodel *model = (TXLmodel *)inModel;
     switch(param) {
         case TXL_R:
             model->R = value->rValue;
diff --git a/src/spicelib/devices/vdmos/vdmosacld.c b/src/spicelib/devices/vdmos/vdmosacld.c
index 67aa39f10..b5f5e3138 100644
--- a/src/spicelib/devices/vdmos/vdmosacld.c
+++ b/src/spicelib/devices/vdmos/vdmosacld.c
@@ -29,7 +29,7 @@ VDMOSacLoad(GENmodel *inModel, CKTcircuit *ckt)
     double GmT;
     double xcsT, xcTt;
 
-    register int selfheat;
+    int selfheat;
 
     for( ; model != NULL; model = VDMOSnextModel(model)) {
         for(here = VDMOSinstances(model); here!= NULL;
diff --git a/src/spicelib/devices/vdmos/vdmosload.c b/src/spicelib/devices/vdmos/vdmosload.c
index 7fb688a8f..69fac79fd 100644
--- a/src/spicelib/devices/vdmos/vdmosload.c
+++ b/src/spicelib/devices/vdmos/vdmosload.c
@@ -56,7 +56,7 @@ VDMOSload(GENmodel *inModel, CKTcircuit *ckt)
     int Check_th, Check_dio;
     int error;
 
-    register int selfheat;
+    int selfheat;
     double rd0T, rd1T, dBeta_dT, dIds_dT;
     double Vrd=0.0, dIth_dVrd=0.0, dIrd_dT=0.0;
     double drd0T_dT, drd1T_dT, drd_dT, dgdrain_dT=0.0;