diff --git a/dbus.hpp b/dbus.hpp
index bbe2e49..f2fb923 100644
--- a/dbus.hpp
+++ b/dbus.hpp
@@ -12,7 +12,7 @@
 #include <random>
 #include <thread>
 #ifdef DBUS_ENABLED
-#ifdef OLD_SDBUS
+#if OLD_SDBUS
 #define OBJECT_PATH(path) path
 #define VARIANT(value) value
 #define BUS_NAME(name) name