diff --git a/bmc_epoch.hpp b/bmc_epoch.hpp
index b47a39b..d8abe2f 100644
--- a/bmc_epoch.hpp
+++ b/bmc_epoch.hpp
@@ -20,7 +20,7 @@
 {
   public:
     friend class TestBmcEpoch;
-    BmcEpoch(sdbusplus::bus::bus& bus, const char* objPath);
+    BmcEpoch(sdbusplus::bus_t& bus, const char* objPath);
     ~BmcEpoch();
 
     /**