diff --git a/psa_car_controller/psacc/application/charging.py b/psa_car_controller/psacc/application/charging.py
index d75dadca..e58d649a 100644
--- a/psa_car_controller/psacc/application/charging.py
+++ b/psa_car_controller/psacc/application/charging.py
@@ -104,7 +104,7 @@ def _calculated_fields(charge_list: list):
             if c.get("stop_at") and c.get("start_at"):
                 c.update(
                     {
-                        "duration_min": (c.get("stop_at") - c.get("start_at")).seconds
+                        "duration_min": (c.get("stop_at") - c.get("start_at")).total_seconds()
                         / 60,
                         "duration_str": str((c.get("stop_at") - c.get("start_at"))),
                     }