diff --git a/script/users/X-Treme users/launchOTF.py b/script/users/X-Treme users/launchOTF.py
index dac01fd6..618de4a6 100644
--- a/script/users/X-Treme users/launchOTF.py	
+++ b/script/users/X-Treme users/launchOTF.py	
@@ -15,6 +15,7 @@ print "done setting energy."
 
 
 caput('X03DA-OP-VG7:WT_SET',1)   #open ES vacuum valve
+caput('X03DA-OP-ST1:WT_SET_CLOSE',0)  # 
 caput('X03DA-OP-ST1:WT_SET_OPEN',1) # open ES Shutter
 
 time.sleep(5.0)