diff --git a/force_bdss/tests/fixtures/test_csv.json b/force_bdss/tests/fixtures/test_csv.json
index a74afc6474f158fa2c838fcc6a599e91faaef25e..a774071ffaf48e8893ef2a51fdc68d5eeecb94bd 100644
--- a/force_bdss/tests/fixtures/test_csv.json
+++ b/force_bdss/tests/fixtures/test_csv.json
@@ -8,6 +8,9 @@
           {
             "id": "force.bdss.mco_parameter.enthought.ranged",
             "model_data": {
+                "initial_value": 3,
+                "lower_bound": 0,
+                "upper_bound": 10
             }
           }
         ]