diff --git a/custom_components/mikrotik_router/sensor_types.py b/custom_components/mikrotik_router/sensor_types.py
index 88d864a..64a1b7a 100644
--- a/custom_components/mikrotik_router/sensor_types.py
+++ b/custom_components/mikrotik_router/sensor_types.py
@@ -230,7 +230,7 @@ SENSOR_TYPES = {
         icon="mdi:speedometer",
         native_unit_of_measurement=PERCENTAGE,
         device_class=None,
-        state_class=None,
+        state_class=SensorStateClass.MEASUREMENT,
         entity_category=None,
         ha_group="System",
         data_path="resource",
@@ -245,7 +245,7 @@ SENSOR_TYPES = {
         icon="mdi:memory",
         native_unit_of_measurement=PERCENTAGE,
         device_class=None,
-        state_class=None,
+        state_class=SensorStateClass.MEASUREMENT,
         entity_category=None,
         ha_group="System",
         data_path="resource",
@@ -260,7 +260,7 @@ SENSOR_TYPES = {
         icon="mdi:harddisk",
         native_unit_of_measurement=PERCENTAGE,
         device_class=None,
-        state_class=None,
+        state_class=SensorStateClass.MEASUREMENT,
         entity_category=None,
         ha_group="System",
         data_path="resource",