diff --git a/inc/power_button.hpp b/inc/power_button.hpp
index 90076f3..549b51f 100644
--- a/inc/power_button.hpp
+++ b/inc/power_button.hpp
@@ -39,7 +39,7 @@
 {
   public:
     PowerButton(sdbusplus::bus_t& bus, const char* path, EventPtr& event,
-                buttonConfig& buttonCfg) :
+                ButtonConfig& buttonCfg) :
         sdbusplus::server::object_t<
             sdbusplus::xyz::openbmc_project::Chassis::Buttons::server::Power>(
             bus, path),