diff --git a/src/rec/longinRecord.c b/src/rec/longinRecord.c
index 58d9ccfbf..12da09c60 100644
--- a/src/rec/longinRecord.c
+++ b/src/rec/longinRecord.c
@@ -201,10 +201,10 @@ static long get_alarm_double(DBADDR *paddr, struct dbr_alDouble	*pad)
     longinRecord *prec=(longinRecord *)paddr->precord;
 
     if(paddr->pfield==(void *)&prec->val){
-         pad->upper_alarm_limit = prec->hihi;
-         pad->upper_warning_limit = prec->high;
-         pad->lower_warning_limit = prec->low;
-         pad->lower_alarm_limit = prec->lolo;
+        pad->upper_alarm_limit = prec->hhsv ? prec->hihi : epicsNAN;
+        pad->upper_warning_limit = prec->hsv ? prec->high : epicsNAN;
+        pad->lower_warning_limit = prec->lsv ? prec->low : epicsNAN;
+        pad->lower_alarm_limit = prec->llsv ? prec->lolo : epicsNAN;
     } else recGblGetAlarmDouble(paddr,pad);
     return(0);
 }
diff --git a/src/rec/longoutRecord.c b/src/rec/longoutRecord.c
index a57d52829..c6ba45a4c 100644
--- a/src/rec/longoutRecord.c
+++ b/src/rec/longoutRecord.c
@@ -242,10 +242,10 @@ static long get_alarm_double(DBADDR *paddr,struct dbr_alDouble *pad)
     int     fieldIndex = dbGetFieldIndex(paddr);
 
     if(fieldIndex == longoutRecordVAL) {
-         pad->upper_alarm_limit = prec->hihi;
-         pad->upper_warning_limit = prec->high;
-         pad->lower_warning_limit = prec->low;
-         pad->lower_alarm_limit = prec->lolo;
+        pad->upper_alarm_limit = prec->hhsv ? prec->hihi : epicsNAN;
+        pad->upper_warning_limit = prec->hsv ? prec->high : epicsNAN;
+        pad->lower_warning_limit = prec->lsv ? prec->low : epicsNAN;
+        pad->lower_alarm_limit = prec->llsv ? prec->lolo : epicsNAN;
     } else recGblGetAlarmDouble(paddr,pad);
     return(0);
 }