diff --git a/script/RFscan/GunScan.py b/script/RFscan/GunScan.py
index 12f51bf..3b72400 100644
--- a/script/RFscan/GunScan.py
+++ b/script/RFscan/GunScan.py
@@ -14,8 +14,8 @@ else:
     nb    = int(args[3])
     lat   = args[4]
 
-disp    = caget("SINBD01-DSCR010:DISPERSION")
-energy0 = caget("SINBD01-DSCR010:ENERGY")
+disp    = caget("SINBD01-DSCR010:DISPERSION-SIM")
+energy0 = caget("SINBD01-DSCR010:ENERGY-SIM")
 
 #disp = 0.32
 #energy0 = 6.5