diff --git a/src/spicelib/devices/isrc/isrcacct.c b/src/spicelib/devices/isrc/isrcacct.c
index 5bd1acf12..5896681d4 100644
--- a/src/spicelib/devices/isrc/isrcacct.c
+++ b/src/spicelib/devices/isrc/isrcacct.c
@@ -25,7 +25,7 @@ ISRCaccept(CKTcircuit *ckt, GENmodel *inModel)
         for (here = model->ISRCinstances; here != NULL ;
                 here=here->ISRCnextInstance) {
             
-            if(!ckt->CKTmode & (MODETRAN | MODETRANOP)) {
+            if(~ckt->CKTmode & (MODETRAN | MODETRANOP)) {
                 /* not transient, so shouldn't be here */
                 return(OK);
             } else {
diff --git a/src/spicelib/devices/vsrc/vsrcacct.c b/src/spicelib/devices/vsrc/vsrcacct.c
index 5ca61040e..29f984478 100644
--- a/src/spicelib/devices/vsrc/vsrcacct.c
+++ b/src/spicelib/devices/vsrc/vsrcacct.c
@@ -30,7 +30,7 @@ VSRCaccept(CKTcircuit *ckt, GENmodel *inModel)
         for (here = model->VSRCinstances; here != NULL ;
                 here=here->VSRCnextInstance) {
             
-            if(!ckt->CKTmode & (MODETRAN | MODETRANOP)) {
+            if(~ckt->CKTmode & (MODETRAN | MODETRANOP)) {
                 /* not transient, so shouldn't be here */
                 return(OK);
             } else {