diff --git a/redfish-core/lib/account_service.hpp b/redfish-core/lib/account_service.hpp
index 9f3c96e..56cd492 100644
--- a/redfish-core/lib/account_service.hpp
+++ b/redfish-core/lib/account_service.hpp
@@ -2244,7 +2244,7 @@
         [asyncResp, username, password(std::move(password)),
          roleId(std::move(roleId)), enabled, newUser{std::string(*newUserName)},
          locked, userSelf, accountTypes(std::move(accountTypes))](
-            const boost::system::error_code ec, sdbusplus::message_t& m) {
+            const boost::system::error_code& ec, sdbusplus::message_t& m) {
         if (ec)
         {
             userErrorMessageHandler(m.get_error(), asyncResp, newUser,
diff --git a/redfish-core/lib/event_service.hpp b/redfish-core/lib/event_service.hpp
index aef4d47..9e2d0fe 100644
--- a/redfish-core/lib/event_service.hpp
+++ b/redfish-core/lib/event_service.hpp
@@ -191,7 +191,7 @@
 }
 
 inline void doSubscriptionCollection(
-    const boost::system::error_code ec,
+    const boost::system::error_code& ec,
     const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
     const dbus::utility::ManagedObjectType& resp)
 {
@@ -255,7 +255,7 @@
             memberArray.emplace_back(std::move(member));
         }
         crow::connections::systemBus->async_method_call(
-            [asyncResp](const boost::system::error_code ec,
+            [asyncResp](const boost::system::error_code& ec,
                         const dbus::utility::ManagedObjectType& resp) {
             doSubscriptionCollection(ec, asyncResp, resp);
             },