diff --git a/secop_psi/ls370res.py b/secop_psi/ls370res.py
index 27e1a33..279cc04 100644
--- a/secop_psi/ls370res.py
+++ b/secop_psi/ls370res.py
@@ -63,7 +63,7 @@ class Main(HasIodev, Drivable):
     value = Parameter('the current channel', poll=REGULAR, datatype=IntRange(0, 17))
     target = Parameter('channel to select', datatype=IntRange(0, 17))
     autoscan = Parameter('whether to scan automatically', datatype=BoolType(), readonly=False, default=False)
-    pollinterval = Parameter('sleeptime between polls', default=1)
+    pollinterval = Parameter(default=1, export=False)
 
     pollerClass = Poller
     iodevClass = StringIO
@@ -149,7 +149,7 @@ class ResChannel(HasIodev, Readable):
     main = Attached()
 
     value = Parameter(datatype=FloatRange(unit='Ohm'))
-    pollinterval = Parameter(visibility=3)
+    pollinterval = Parameter(visibility=3, default=1, export=False)
     range = Parameter('reading range', readonly=False,
                       datatype=EnumType(**RES_RANGE), handler=rdgrng)
     minrange = Parameter('minimum range for software autorange', readonly=False, default=1,