diff --git a/script/Alignment/Gun_solenoid_alignment_dv_sim.py b/script/Alignment/Gun_solenoid_alignment_dv_sim.py
index fe4961e..f75f305 100644
--- a/script/Alignment/Gun_solenoid_alignment_dv_sim.py
+++ b/script/Alignment/Gun_solenoid_alignment_dv_sim.py
@@ -18,7 +18,7 @@ mag = [ "SINEG01-MCRX120",
         "SINEG01-MQUA140",
         "SINEG01-MQUA150"]
 for m in mag:
-    ch = m + ":I-SET"
+    ch = Channel(m + ":I-SET")
     caput(ch, 0.0)
 for m in mag:
     ccr(m)