diff --git a/script/optics/ExitSlitScan.py b/script/optics/ExitSlitScan.py
index fe3c1a72..eee7dd00 100644
--- a/script/optics/ExitSlitScan.py
+++ b/script/optics/ExitSlitScan.py
@@ -5,7 +5,7 @@ set ADC or Keithly averaging separately.
 """
 
 POSITIONERS = (ExitSlit)
-SENSORS = (SampleCurrent, RefCurrent, AuxCurrent, MachineCurrent)
+SENSORS = (SampleCurrent, RefCurrent, MachineCurrent)
 STARTPOS = (0.0)
 ENDPOS = (200.0)
 STEPS = 10.0