diff --git a/utils.hpp b/utils.hpp
index cbb7248..febcb6a 100644
--- a/utils.hpp
+++ b/utils.hpp
@@ -18,7 +18,7 @@
  *
  * @return void, will throw exception on failure
  */
-void subscribeToSystemdSignals(sdbusplus::bus::bus& bus);
+void subscribeToSystemdSignals(sdbusplus::bus_t& bus);
 
 /** @brief Get service name from object path and interface
  *