diff --git a/esphome/components/pmsx003/sensor.py b/esphome/components/pmsx003/sensor.py
index fcded50c25..c3dd7d5a97 100644
--- a/esphome/components/pmsx003/sensor.py
+++ b/esphome/components/pmsx003/sensor.py
@@ -19,6 +19,7 @@ from esphome.const import (
     CONF_PM_10_0UM,
     CONF_TEMPERATURE,
     CONF_TYPE,
+    DEVICE_CLASS_EMPTY,
     DEVICE_CLASS_HUMIDITY,
     DEVICE_CLASS_TEMPERATURE,
     ICON_CHEMICAL_WEAPON,