diff --git a/tests/antares/services/local_services/test_study.py b/tests/antares/services/local_services/test_study.py
index 62c2d5e3..515619f7 100644
--- a/tests/antares/services/local_services/test_study.py
+++ b/tests/antares/services/local_services/test_study.py
@@ -1292,8 +1292,8 @@ def test_area_optimization_ini_content(self, tmp_path, local_study):
 non-dispatchable-power = true
 dispatchable-hydro-power = true
 other-dispatchable-power = true
-spread-unsupplied-energy-cost = 0
-spread-spilled-energy-cost = 0
+spread-unsupplied-energy-cost = 0.000000
+spread-spilled-energy-cost = 0.000000
 
 [filtering]
 filter-synthesis = hourly, daily, weekly, monthly, annual
@@ -1335,8 +1335,8 @@ def test_custom_area_optimization_ini_content(self, tmp_path, local_study):
 non-dispatchable-power = true
 dispatchable-hydro-power = false
 other-dispatchable-power = true
-spread-unsupplied-energy-cost = 0
-spread-spilled-energy-cost = 0
+spread-unsupplied-energy-cost = 0.000000
+spread-spilled-energy-cost = 0.000000
 
 [filtering]
 filter-synthesis = hourly, daily, weekly, monthly, annual