diff --git a/include/dbus_singleton.hpp b/include/dbus_singleton.hpp
index 63c88b7..2830216 100644
--- a/include/dbus_singleton.hpp
+++ b/include/dbus_singleton.hpp
@@ -1,11 +1,15 @@
 #pragma once
+#include <boost/asio/io_context.hpp>
 #include <sdbusplus/asio/connection.hpp>
 
 namespace crow
 {
 namespace connections
 {
-static std::shared_ptr<sdbusplus::asio::connection> systemBus;
+
+// Initialze before using!
+// Please see webserver_main for the example how this variable is initialzed,
+extern sdbusplus::asio::connection* systemBus;
 
 } // namespace connections
 } // namespace crow