diff --git a/src/hyperion/experiment_plans/robot_load_then_centre_plan.py b/src/hyperion/experiment_plans/robot_load_then_centre_plan.py
index a0382eb94..c56b6dd77 100644
--- a/src/hyperion/experiment_plans/robot_load_then_centre_plan.py
+++ b/src/hyperion/experiment_plans/robot_load_then_centre_plan.py
@@ -169,7 +169,9 @@ def do_robot_load(
 
     yield from bps.wait("robot_load")
 
-    yield from bps.abs_set(composite.thawer.thaw_for_time_s, thawing_time)
+    yield from bps.abs_set(
+        composite.thawer.thaw_for_time_s, thawing_time, group="thawing_finished"
+    )
     yield from wait_for_smargon_not_disabled(composite.smargon)