diff --git a/script/optics/ExitSlitScanKei.py b/script/optics/ExitSlitScanKei.py
index 48f8674e..fdfc9354 100644
--- a/script/optics/ExitSlitScanKei.py
+++ b/script/optics/ExitSlitScanKei.py
@@ -1,7 +1,7 @@
 """
 exit slit test scan
 
-manual settings: photon energy 800 eV (G1200), FE = 2 x 3
+manual settings: photon energy 800 eV (G1200), FE = 1 x 1
 
 keithley 1: diode
 keithley 2: RMU