diff --git a/include/PwmSensor.hpp b/include/PwmSensor.hpp
index 22614e6..69a35c4 100644
--- a/include/PwmSensor.hpp
+++ b/include/PwmSensor.hpp
@@ -22,6 +22,7 @@
     std::shared_ptr<sdbusplus::asio::dbus_interface> sensorInterface;
     std::shared_ptr<sdbusplus::asio::dbus_interface> controlInterface;
     std::shared_ptr<sdbusplus::asio::dbus_interface> association;
+    size_t pwmMax;
     void setValue(uint32_t value);
     uint32_t getValue(bool errThrow = true);
 };