diff --git a/src/plugins/support/PythonSupport/tests/data/tests.py b/src/plugins/support/PythonSupport/tests/data/tests.py
index 88ef454f44..7403e523e4 100755
--- a/src/plugins/support/PythonSupport/tests/data/tests.py
+++ b/src/plugins/support/PythonSupport/tests/data/tests.py
@@ -110,8 +110,8 @@ def test_simulation(title, file_name_or_url, first=True):
 
     data = simulation.data()
 
-    data.set_starting_point(10)
-    data.set_ending_point(30)
+    data.set_starting_point(10.0)
+    data.set_ending_point(30.0)
     data.set_point_interval(0.1)
     data.set_ode_solver('Heun')
     data.set_ode_solver_property('Step', 0.01)