diff --git a/custom_components/ohme/sensor.py b/custom_components/ohme/sensor.py
index 099e1d3..803ebb8 100644
--- a/custom_components/ohme/sensor.py
+++ b/custom_components/ohme/sensor.py
@@ -527,6 +527,10 @@ def _handle_coordinator_update(self) -> None:
         if self.coordinator.data and self.coordinator.data['car'] and self.coordinator.data['car']['batterySoc']:
             self._state = self.coordinator.data['car']['batterySoc']['percent'] or self.coordinator.data['batterySoc']['percent']
 
+            # Don't allow negatives
+            if isinstance(self._state, int) and self._state < 0:
+                self._state = 0
+
             self._last_updated = utcnow()
             self.async_write_ha_state()