diff --git a/script/test/DemoCscanPseudo1.py b/script/test/DemoCscanPseudo1.py
index 7c055b47..da09e9e3 100644
--- a/script/test/DemoCscanPseudo1.py
+++ b/script/test/DemoCscanPseudo1.py
@@ -13,8 +13,9 @@ class PseudoMotor(RegisterBase, ControlledSpeedable):
          offset = self.setpoint - self.readback
          d = (self.getSpeed() * (time.time() - self.settime))
          d = min(d, abs(offset))         
-         self.position = self.readback + d if offset>0 else self.readback -d
-         return self.position
+         self.readback = self.readback + d if offset>0 else self.readback -d
+         self.settime = time.time()
+         return self.readback
 
     def doWrite(self, val):
         self.settime = time.time()