diff --git a/include/PwmSensor.hpp b/include/PwmSensor.hpp
index d78b8e9..2c8ebe6 100644
--- a/include/PwmSensor.hpp
+++ b/include/PwmSensor.hpp
@@ -13,7 +13,7 @@
               std::shared_ptr<sdbusplus::asio::connection>& conn,
               sdbusplus::asio::object_server& objectServer,
               const std::string& sensorConfiguration,
-              const std::string& sensorType);
+              const std::string& sensorType, bool isValueMutable = false);
     ~PwmSensor();
 
   private:
@@ -23,6 +23,7 @@
     std::shared_ptr<sdbusplus::asio::dbus_interface> sensorInterface;
     std::shared_ptr<sdbusplus::asio::dbus_interface> controlInterface;
     std::shared_ptr<sdbusplus::asio::dbus_interface> association;
+    std::shared_ptr<sdbusplus::asio::dbus_interface> valueMutabilityInterface;
     double pwmMax;
     void setValue(uint32_t value);
     uint32_t getValue(bool errThrow = true);