diff --git a/script/testVD85.py b/script/testVD85.py
index 3b106a3..66fbc84 100644
--- a/script/testVD85.py
+++ b/script/testVD85.py
@@ -1,4 +1,4 @@
-x =  Channel(bpm_ch  + ":X1-SIMU",                 type = 'd', alias='BPM-X')
+x =  Channel("SINBC02-DBPM140:X1-SIMU", type = 'd', alias='BPM-X')
 xb = create_averager(x, 5, 0.100)
 print 'xb.min =', xb.min
 print 'xb.max =', xb.max