diff --git a/geomagio/pcdcp/PCDCPParser.py b/geomagio/pcdcp/PCDCPParser.py
index ed27010b64eeaaca930230c2e9069a9515392244..b6dd6206a05f76f692a9991d53d97d422c214cef 100644
--- a/geomagio/pcdcp/PCDCPParser.py
+++ b/geomagio/pcdcp/PCDCPParser.py
@@ -5,9 +5,9 @@ import numpy
 from datetime import datetime
 
 # values that represent missing data points in PCDCP
-NINES = numpy.float64('9999999')
-NINES_RAW = numpy.float64('99999990')
-NINES_DEG = numpy.float64('9999')
+NINES = numpy.int('9999999')
+NINES_RAW = numpy.int('99999990')
+NINES_DEG = numpy.int('9999')
 
 class PCDCPParser(object):
     """PCDCP parser.