diff --git a/artiq/frontend/artiq_run.py b/artiq/frontend/artiq_run.py
index 962e7a5e5..b35ed66f2 100755
--- a/artiq/frontend/artiq_run.py
+++ b/artiq/frontend/artiq_run.py
@@ -175,7 +175,7 @@ def _build_experiment(device_mgr, dataset_mgr, args):
         file = getattr(module, "__file__")
     expid = {
         "file": file,
-        "experiment": args.experiment,
+        "class_name": args.experiment,
         "arguments": arguments
     }
     device_mgr.virtual_devices["scheduler"].expid = expid