diff --git a/script/XAS.py b/script/XAS.py
index 43caafd4..7b0faf1a 100644
--- a/script/XAS.py
+++ b/script/XAS.py
@@ -10,7 +10,7 @@ NUMPOINTS = 11
 LATENCY = 0.1
 DWELL = 1.0
 #OTF = FALSE
-ENDSCAN = true # close shutter at end
+ENDSCAN = True # close shutter at end
 
 value = DWELL * 10.0
 SampleCurrentAveraging.write(value)