diff --git a/artiq/test/coredevice/test_portability.py b/artiq/test/coredevice/test_portability.py
index 2238ea805..a861b6833 100644
--- a/artiq/test/coredevice/test_portability.py
+++ b/artiq/test/coredevice/test_portability.py
@@ -10,7 +10,7 @@ def _run_on_host(k_class, *args, **kwargs):
     device_mgr = dict()
     device_mgr["core"] = sim_devices.Core(device_mgr)
 
-    k_inst = k_class((device_mgr, None, None),
+    k_inst = k_class((device_mgr, None, None, {}),
                      *args, **kwargs)
     k_inst.run()
     return k_inst
diff --git a/artiq/test/hardware_testbench.py b/artiq/test/hardware_testbench.py
index 32bc8cd4a..d13a2f68e 100644
--- a/artiq/test/hardware_testbench.py
+++ b/artiq/test/hardware_testbench.py
@@ -111,7 +111,7 @@ class ExperimentCase(unittest.TestCase):
     def create(self, cls, *args, **kwargs):
         try:
             exp = cls(
-                (self.device_mgr, self.dataset_mgr, None),
+                (self.device_mgr, self.dataset_mgr, None, {}),
                 *args, **kwargs)
         except DeviceError as e:
             # skip if ddb does not match requirements