diff --git a/script/KeithleyVoltageScan.py b/script/KeithleyVoltageScan.py
index fe4d2c29..ef3a6dda 100644
--- a/script/KeithleyVoltageScan.py
+++ b/script/KeithleyVoltageScan.py
@@ -5,7 +5,7 @@ Keithley voltage scan
 
 POSITIONERS = (Keithley2Voltage)
 SENSORS = (Counts, SampleCurrent, RefCurrent, MachineCurrent, EnergyDistribution, AngleDistribution, Scienta.dataMatrix)
-POSITIONS = (0., 15.)
+POSITIONS = (-2., 20.)
 STEPS = 0.5
 LATENCY = 1.0
 RELATIVE = False