diff --git a/lasp/lasp_measurement.py b/lasp/lasp_measurement.py
index 42a4955..a5278a5 100644
--- a/lasp/lasp_measurement.py
+++ b/lasp/lasp_measurement.py
@@ -217,14 +217,15 @@ class Measurement:
 
     @property
     def channelConfig(self):
-        return [DaqChannel(channel_enabled=True,
+        chcfg = [DaqChannel(channel_enabled=True,
                            channel_name=chname,
-                           sensitivity=sens,
-                           qty=qty)
-                for chname, sens, qty in zip(
+                           sensitivity=sens,)
+                for chname, sens in zip(
                     self.channelNames,
-                    self.sensitivity,
-                    self.qtys)]
+                    self.sensitivity)]
+        for i, qty in enumerate(self.qtys):
+            chcfg[i].qty = qty
+        return chcfg
 
     @channelConfig.setter
     def channelConfig(self, chcfg):