diff --git a/accessories/contactsensor.js b/accessories/contactsensor.js
index 0a436dd..1dcd8a0 100644
--- a/accessories/contactsensor.js
+++ b/accessories/contactsensor.js
@@ -32,10 +32,12 @@ class ContactSensor extends VerisureAccessory {
     const { Service, Characteristic } = this.homebridge.hap;
 
     this.service = new Service.ContactSensor(this.name);
-    this.service
+    const currentStateCharacteristic = this.service
       .getCharacteristic(Characteristic.ContactSensorState)
       .on('get', this.getCurrentSensorState.bind(this));
 
+    this.pollCharacteristics.push(currentStateCharacteristic);
+
     return [this.accessoryInformation, this.service];
   }
 }