diff --git a/script/keithley.py b/script/keithley.py
index 9a5e08cb..a915d4f7 100644
--- a/script/keithley.py
+++ b/script/keithley.py
@@ -26,7 +26,7 @@ class Keithley(object):
         self.scanCh = epics.ChannelInteger(self.base_name + "Scan", self.base_channel + "READSCAN.SCAN")
         self.ttypeCh = epics.ChannelInteger(self.base_name + "TType", self.base_channel + "TTYPE")
         self.nplcCh = epics.ChannelDouble(self.base_name + "Nplc", self.base_channel + "NPLC")
-        self.navgCh = epics.ChannelInteger(self.base_name + "Navg", self.base_channel + "NAVG")
+        self.navgCh = epics.ChannelDouble(self.base_name + "Navg", self.base_channel + "NAVG")
         self.tottimeCh = epics.ChannelDouble(self.base_name + "TotTime", self.base_channel + "TOTTIME")
         self.doinitCh = epics.ChannelInteger(self.base_name + "DoInit", self.base_channel + "DOINIT")
         self.dotriggerCh = epics.ChannelInteger(self.base_name + "DoTrigger", self.base_channel + "DOTRIGGER")