diff --git a/src/IntrusionSensorMain.cpp b/src/IntrusionSensorMain.cpp
index 9ec3f5d..154b2b2 100644
--- a/src/IntrusionSensorMain.cpp
+++ b/src/IntrusionSensorMain.cpp
@@ -53,7 +53,7 @@
 namespace fs = std::filesystem;
 
 static bool getIntrusionSensorConfig(
-    std::shared_ptr<sdbusplus::asio::connection>& dbusConnection,
+    const std::shared_ptr<sdbusplus::asio::connection>& dbusConnection,
     IntrusionSensorType* pType, int* pBusId, int* pSlaveAddr,
     bool* pGpioInverted)
 {
@@ -179,8 +179,8 @@
 boost::container::flat_map<int, std::string> lanInfoMap;
 boost::container::flat_map<std::string, int> pathSuffixMap;
 
-static void
-    getNicNameInfo(std::shared_ptr<sdbusplus::asio::connection>& dbusConnection)
+static void getNicNameInfo(
+    const std::shared_ptr<sdbusplus::asio::connection>& dbusConnection)
 {
     auto getter = std::make_shared<GetSensorConfiguration>(
         dbusConnection,
@@ -329,8 +329,8 @@
  *
  * @return true on success and false on failure
  */
-static bool
-    initializeLanStatus(std::shared_ptr<sdbusplus::asio::connection>& conn)
+static bool initializeLanStatus(
+    const std::shared_ptr<sdbusplus::asio::connection>& conn)
 {
     // init lan port name from configuration
     getNicNameInfo(conn);