diff --git a/hnn_core/tests/test_gui.py b/hnn_core/tests/test_gui.py
index 3cbf6d2b2..e873724b2 100644
--- a/hnn_core/tests/test_gui.py
+++ b/hnn_core/tests/test_gui.py
@@ -624,7 +624,7 @@ def test_gui_upload_csv_simulation():
     else:  # UNIX-like systems
         file_url = 'file://' + absolute_path
     _ = gui._simulate_upload_data(file_url)
-    # gui.load_data_button.set_trait('value', uploaded_value)
+
     assert len(gui.data['simulation_data']) == 1
     assert 'test_default' in gui.data['simulation_data'].keys()
     assert gui.data['simulation_data']['test_default']['net'] is None