diff --git a/script/rocknroll.py b/script/rocknroll.py
index a2b716d..905a11a 100644
--- a/script/rocknroll.py
+++ b/script/rocknroll.py
@@ -1,7 +1,7 @@
 ei = get_energy()
 if ei < 6.0:
     print "No rocking optimization for lower energy for 3rd harmonics rejection'
-run("rock", {"rock_axis":th1})
+rock(th1)
 
 #check beam position at EBOX and fbm if needed
 time.sleep(2.0)