diff --git a/script/ExitSlitScan.py b/script/ExitSlitScan.py
index 1937b075..c5a8e1a8 100644
--- a/script/ExitSlitScan.py
+++ b/script/ExitSlitScan.py
@@ -6,7 +6,7 @@ POSITIONERS = (ExitSlit)
 SENSORS = (SampleCurrent, RefCurrent, AuxCurrent, MachineCurrent)
 STARTPOS = (200.0)
 ENDPOS = (0.0)
-STEPS = 10.0
+STEPS = -10.0
 LATENCY = 0.1
 DWELL = 1.0