diff --git a/dbus/dbusutil.hpp b/dbus/dbusutil.hpp
index ee8d166..0132073 100644
--- a/dbus/dbusutil.hpp
+++ b/dbus/dbusutil.hpp
@@ -4,6 +4,7 @@
 #include <map>
 #include <stdexcept>
 #include <string>
+#include <type_traits>
 #include <unordered_map>
 #include <utility>
 #include <vector>