diff --git a/control/json/fan.cpp b/control/json/fan.cpp
index a880915..9fbd03c 100644
--- a/control/json/fan.cpp
+++ b/control/json/fan.cpp
@@ -32,7 +32,7 @@
 constexpr auto FAN_SENSOR_PATH = "/xyz/openbmc_project/sensors/fan_tach/";
 constexpr auto FAN_TARGET_PROPERTY = "Target";
 
-Fan::Fan(sdbusplus::bus::bus& bus, const json& jsonObj) :
+Fan::Fan(const json& jsonObj, sdbusplus::bus::bus& bus) :
     ConfigBase(jsonObj), _bus(bus)
 {
     setInterface(jsonObj);