diff --git a/unittests/test_energy_systems_water_to_water_hp.py b/unittests/test_energy_systems_water_to_water_hp.py
index a455834a..27070163 100644
--- a/unittests/test_energy_systems_water_to_water_hp.py
+++ b/unittests/test_energy_systems_water_to_water_hp.py
@@ -48,7 +48,18 @@ class TestEnergySystemsFactory(TestCase):
       'FuelPrice': 0.12,
       'FuelEF': 1887,
       'FuelDensity': 0.717,
-      'HPSupTemp': 60
+      'HPSupTemp': 60,
+      'b1': 10,
+      'b2': 10,
+      'b3': 10,
+      'b4': 10,
+      'b5': 10,
+      'b6': 10,
+      'b7': 10,
+      'b8': 10,
+      'b9': 10,
+      'b10': 10,
+      'b11': 10
     }
 
     EnergySystemsExportFactory(self._city, user_input, 'ClimateMaster 156 kW', self._output_path).export('water')