diff --git a/script/RFscan/phase_scan_caqtdm_dv2.py b/script/RFscan/phase_scan_caqtdm_dv2.py
index 3989da7..9edb9ee 100644
--- a/script/RFscan/phase_scan_caqtdm_dv2.py
+++ b/script/RFscan/phase_scan_caqtdm_dv2.py
@@ -26,7 +26,7 @@ rf_phase_var.initialize()
 rf_ampl_rbk  =  Channel(prefix + ":GET-VSUM-AMPLT-SIM", type = 'd', alias='Amplitude Readback')
 rf_ampl_rbk.write(1.0)
 rf_power_rbk =  Channel(prefix + ":GET-KLY-POWER-SIM",  type = 'd', alias='Power Readback')
-bpm_x        =  Channel(bpm_ch + ":X1",                 type = 'd', alias='BPM-X')
+bpm_x        =  Channel(bpm_ch + ":X1-SIMU",                 type = 'd', alias='BPM-X')
 
 
 caput(prefix + ":GET-FIT-PHASE-ARRAY",  to_array([0.0],'d'))