diff --git a/homeassistant/components/unifi/sensor.py b/homeassistant/components/unifi/sensor.py
index 3d0ffa1896e..eaa7cc6fe08 100644
--- a/homeassistant/components/unifi/sensor.py
+++ b/homeassistant/components/unifi/sensor.py
@@ -231,6 +231,7 @@ ENTITY_DESCRIPTIONS: tuple[UnifiSensorEntityDescription, ...] = (
         key="WLAN clients",
         entity_category=EntityCategory.DIAGNOSTIC,
         has_entity_name=True,
+        state_class=SensorStateClass.MEASUREMENT,
         allowed_fn=lambda controller, obj_id: True,
         api_handler_fn=lambda api: api.wlans,
         available_fn=async_wlan_available_fn,