diff --git a/tests/test_mcs_card.py b/tests/test_mcs_card.py
index 45db8bd..ac62bc6 100644
--- a/tests/test_mcs_card.py
+++ b/tests/test_mcs_card.py
@@ -182,7 +182,7 @@ def test_send_data_to_bec(mock_det, metadata, mca_data):
     mock_det.scaninfo.scanID = metadata["scanID"]
     mock_det.custom_prepare.mca_data = mca_data
     mock_det.custom_prepare._send_data_to_bec()
-    device_metadata = metadata["scanID"]
+    device_metadata = mock_det.scaninfo.scan_msg.metadata
     metadata.update({"async_update": "append", "num_lines": mock_det.num_lines.get()})
     data = messages.DeviceMessage(signals=dict(mca_data), metadata=device_metadata).dumps()
     calls = mock.call(
@@ -193,7 +193,7 @@ def test_send_data_to_bec(mock_det, metadata, mca_data):
         expire=1800,
     )
 
-    # assert mock_det.producer.xadd.call_args == calls
+    assert mock_det.producer.xadd.call_args == calls
 
 
 @pytest.mark.parametrize(