diff --git a/sensor.py b/sensor.py
index 41de588..75b5875 100644
--- a/sensor.py
+++ b/sensor.py
@@ -13,7 +13,7 @@ from esphome.const import (
     CONF_TEMPERATURE, 
     UNIT_CELSIUS, 
     UNIT_PERCENT, 
-    UNIT_SECONDS, 
+    UNIT_SECOND, 
     STATE_CLASS_MEASUREMENT, 
     DEVICE_CLASS_TEMPERATURE
 )