diff --git a/src/festim/stepsize.py b/src/festim/stepsize.py
index 1e9ff35e0..a94910f03 100644
--- a/src/festim/stepsize.py
+++ b/src/festim/stepsize.py
@@ -141,7 +141,7 @@ def modify_value(self, value, nb_iterations, t=None):
             if updated_value > time_to_milestone and not np.isclose(
                 t, next_milestone, atol=0
             ):
-                updated_value = next_milestone
+                updated_value = time_to_milestone
 
         return updated_value
 
diff --git a/test/test_stepsize.py b/test/test_stepsize.py
index 5f8bf346b..86c0dce5a 100644
--- a/test/test_stepsize.py
+++ b/test/test_stepsize.py
@@ -185,7 +185,7 @@ def test_overshoot_milestone(nb_its=1, target=4):
         value=current_value, nb_iterations=nb_its, t=0.9
     )
 
-    expected_value = 1.3
+    expected_value = 1.3 - current_value
 
     assert new_value == expected_value