diff --git a/script/KeithleyVoltageScan.py b/script/KeithleyVoltageScan.py
index 3eda13d9..63ef6279 100644
--- a/script/KeithleyVoltageScan.py
+++ b/script/KeithleyVoltageScan.py
@@ -15,6 +15,6 @@ set_adc_averaging()
 set_preference(Preference.PLOT_TYPES, {'Scienta spectrum':1})
 set_exec_pars(compression=True)
 
-lscan(POSITIONERS, SENSORS, POSITIONS[0], POSITIONS[1], STEPS, LATENCY, RELATIVE, before_read=before_readout, after_read = after_readout)
+lscan(POSITIONERS, SENSORS, POSITIONS[0], POSITIONS[1], STEPS, LATENCY, RELATIVE, before_read = before_readout, after_read = after_readout)
 
 # after_scan()