diff --git a/script/device/Pixel.py b/script/device/Pixel.py
index 94371ef..7d635a8 100644
--- a/script/device/Pixel.py
+++ b/script/device/Pixel.py
@@ -17,7 +17,7 @@ class ImageFilename(DeviceBase, Readable, Readable.StringType):
     def read(self):
         return self.getParent().get_image_filename()
 
-class Pixel(DeviceBase, Readable):
+class Pixel(DeviceBase, Readable, Readable.IntType):
     def __init__(self, name, prefix):
         DeviceBase.__init__(self, name)
         self.prefix = prefix
@@ -192,7 +192,7 @@ class Pixel(DeviceBase, Readable):
         
     def read(self):
         #Readable interface: current 
-        return get_count_id()
+        return self.get_count_id()
 
 add_device( Pixel("pixel", "X04SA-ES3-CCD"), True)
 pixel.polling = 1000
diff --git a/script/test/TestStr b/script/test/TestStr
index fe4e769..049fcf8 100644
--- a/script/test/TestStr
+++ b/script/test/TestStr
@@ -1,5 +1,5 @@
 
-class StrDev(DeviceBase, Readable):
+class StrDev(DeviceBase, Readable, Readable.StringType):
     def __init__(self):
         DeviceBase.__init__(self, "StrDev")
         self.index = 0