diff --git a/src/renault_api/kamereon/helpers.py b/src/renault_api/kamereon/helpers.py
index e86f4852..2b82aac6 100644
--- a/src/renault_api/kamereon/helpers.py
+++ b/src/renault_api/kamereon/helpers.py
@@ -26,7 +26,9 @@ def update_schedule(schedule: models.ChargeSchedule, settings: Dict[str, Any]) -
         if day in settings:
             day_settings = settings[day]
 
-            if day_settings:  # pragma: no branch
+            if day_settings is None:
+                setattr(schedule, day, None)
+            elif day_settings:  # pragma: no branch
                 start_time = day_settings["startTime"]
                 duration = day_settings["duration"]
 
diff --git a/tests/kamereon/test_kamereon_vehicle_action.py b/tests/kamereon/test_kamereon_vehicle_action.py
index 58a21ada..228458cd 100644
--- a/tests/kamereon/test_kamereon_vehicle_action.py
+++ b/tests/kamereon/test_kamereon_vehicle_action.py
@@ -119,11 +119,20 @@ def test_charge_schedule_for_json() -> None:
         {
             "id": 1,
             "tuesday": {"startTime": "T12:00Z", "duration": 15},
+            "wednesday": None,
         }
     )
+
+    # Monday kept initial values
+    assert vehicle_data.schedules[0].monday is not None
+    assert vehicle_data.schedules[0].monday.startTime == "T00:00Z"
+    assert vehicle_data.schedules[0].monday.duration == 450
+    # Tuesday has updated values
     assert vehicle_data.schedules[0].tuesday is not None
     assert vehicle_data.schedules[0].tuesday.startTime == "T12:00Z"
     assert vehicle_data.schedules[0].tuesday.duration == 15
+    # Wednesday has values cleared
+    assert vehicle_data.schedules[0].wednesday is None
 
     # Test update activated state
     assert vehicle_data.schedules[1].activated
@@ -147,7 +156,7 @@ def test_charge_schedule_for_json() -> None:
                 "activated": True,
                 "monday": {"startTime": "T00:00Z", "duration": 450},
                 "tuesday": {"startTime": "T12:00Z", "duration": 15},
-                "wednesday": {"startTime": "T00:00Z", "duration": 450},
+                "wednesday": None,
                 "thursday": {"startTime": "T00:00Z", "duration": 450},
                 "friday": {"startTime": "T00:00Z", "duration": 450},
                 "saturday": {"startTime": "T00:00Z", "duration": 450},