diff --git a/model_data/tests/test_mainheat_controls_attributes.py b/model_data/tests/test_mainheat_controls_attributes.py
index e06aa4e9..2eaa1822 100644
--- a/model_data/tests/test_mainheat_controls_attributes.py
+++ b/model_data/tests/test_mainheat_controls_attributes.py
@@ -35,3 +35,23 @@ class TestMainHeatControlAttributes:
         for description in invalid_descriptions:
             with pytest.raises(ValueError):
                 MainheatControlAttributes(description).process()
+
+    def test_process_with_no_data(self):
+        # Create an instance of MainheatControlAttributes with no description
+        attributes = MainheatControlAttributes(description="")
+
+        # Call the process method
+        result = attributes.process()
+
+        # Assert that the result matches the expected dictionary
+        assert result == {
+            "thermostatic_control": False,
+            "charging_system": False,
+            "switch_system": False,
+            "no_control": False,
+            "dhw_control": False,
+            "community_heating": False,
+            "multiple_room_thermostats": False,
+            "auxiliary_systems": False,
+            "trvs": False
+        }