diff --git a/esphome/components/sensor/sensor.h b/esphome/components/sensor/sensor.h
index d57f072d40..f9a45cb1d0 100644
--- a/esphome/components/sensor/sensor.h
+++ b/esphome/components/sensor/sensor.h
@@ -32,7 +32,7 @@ enum StateClass : uint8_t {
   STATE_CLASS_TOTAL = 3,
   STATE_CLASS_MEASUREMENT_ANGLE = 4
 };
-constexpr uint8_t STATE_CLASS_LAST = STATE_CLASS_MEASUREMENT_ANGLE;
+constexpr uint8_t STATE_CLASS_LAST = static_cast<uint8_t>(STATE_CLASS_MEASUREMENT_ANGLE);
 
 const LogString *state_class_to_string(StateClass state_class);