diff --git a/direct/src/directdevices/DirectDeviceManager.py b/direct/src/directdevices/DirectDeviceManager.py
index 1ee3be6507..80ae1340cd 100644
--- a/direct/src/directdevices/DirectDeviceManager.py
+++ b/direct/src/directdevices/DirectDeviceManager.py
@@ -169,7 +169,7 @@ class DirectAnalogs(AnalogNode, DirectObject):
 
     def normalizeChannel(self, chan, minVal = -1, maxVal = 1, sf = 1.0):
         try:
-            return self.normalize(self[chan], minVal, maxVal, sfx)
+            return self.normalize(self[chan], minVal, maxVal, sf)
         except IndexError:
             return 0.0