diff --git a/redfish-core/lib/fabric_adapters.hpp b/redfish-core/lib/fabric_adapters.hpp
index 5912710..1799159 100644
--- a/redfish-core/lib/fabric_adapters.hpp
+++ b/redfish-core/lib/fabric_adapters.hpp
@@ -45,7 +45,7 @@
     sdbusplus::asio::getProperty<std::string>(
         *crow::connections::systemBus, serviceName, fabricAdapterPath,
         "xyz.openbmc_project.Inventory.Decorator.LocationCode", "LocationCode",
-        [aResp](const boost::system::error_code ec,
+        [aResp](const boost::system::error_code& ec,
                 const std::string& property) {
         if (ec)
         {
@@ -71,7 +71,7 @@
         *crow::connections::systemBus, serviceName, fabricAdapterPath,
         "xyz.openbmc_project.Inventory.Decorator.Asset",
         [fabricAdapterPath,
-         aResp{aResp}](const boost::system::error_code ec,
+         aResp{aResp}](const boost::system::error_code& ec,
                        const dbus::utility::DBusPropertiesMap& propertiesList) {
         if (ec)
         {
@@ -129,7 +129,7 @@
     sdbusplus::asio::getProperty<bool>(
         *crow::connections::systemBus, serviceName, fabricAdapterPath,
         "xyz.openbmc_project.Inventory.Item", "Present",
-        [aResp](const boost::system::error_code ec, const bool present) {
+        [aResp](const boost::system::error_code& ec, const bool present) {
         if (ec)
         {
             if (ec.value() != EBADR)
@@ -155,7 +155,7 @@
     sdbusplus::asio::getProperty<bool>(
         *crow::connections::systemBus, serviceName, fabricAdapterPath,
         "xyz.openbmc_project.State.Decorator.OperationalStatus", "Functional",
-        [aResp](const boost::system::error_code ec, const bool functional) {
+        [aResp](const boost::system::error_code& ec, const bool functional) {
         if (ec)
         {
             if (ec.value() != EBADR)
diff --git a/redfish-core/lib/virtual_media.hpp b/redfish-core/lib/virtual_media.hpp
index c153f2f..73a9855 100644
--- a/redfish-core/lib/virtual_media.hpp
+++ b/redfish-core/lib/virtual_media.hpp
@@ -95,7 +95,7 @@
 {
     crow::connections::systemBus->async_method_call(
         [service, resName, aResp,
-         handler](const boost::system::error_code ec,
+         handler](const boost::system::error_code& ec,
                   const dbus::utility::ManagedObjectType& subtree) {
         if (ec)
         {