diff --git a/sdbusplus/test/sdbus_mock.hpp b/sdbusplus/test/sdbus_mock.hpp
index 4d3909c..be8d0ac 100644
--- a/sdbusplus/test/sdbus_mock.hpp
+++ b/sdbusplus/test/sdbus_mock.hpp
@@ -2,6 +2,7 @@
 
 #include "gmock/gmock.h"
 
+#include <sdbusplus/bus.hpp>
 #include <sdbusplus/sdbus.hpp>
 
 namespace sdbusplus