diff --git a/src/aare/gui/sam_cam_test.py b/src/aare/gui/sam_cam_test.py
index 9ac4aaab..abe00a96 100644
--- a/src/aare/gui/sam_cam_test.py
+++ b/src/aare/gui/sam_cam_test.py
@@ -658,7 +658,7 @@ def benchmark_controller(devs,
         )
 
 
-sample_cam = epicsAD(f"{mx_beamline().name.upper()}-SAMCAM:")
+sample_cam = epicsAD(f"{mx_beamline().name.upper()}-ES-MS:")
 devs = BeamlineDevices(mx_beamline())
 metering = MeteringConfig(center_roi=0.7, bg_percentile=10.0, delta_dn=15, winsor_high=230)
 targets = TargetConfig(clip_limit=0.01, percentile=70.0, percentile_target=160.0)