diff --git a/configure.ac b/configure.ac
index c85f208..ddbd584 100644
--- a/configure.ac
+++ b/configure.ac
@@ -62,8 +62,8 @@ if (test "${enable_threads}" = "yes"); then
 	GLIB_LIBS="$GLIB_LIBS $GTHREAD_LIBS"
 fi
 
-PKG_CHECK_MODULES(DBUS, dbus-1 >= 1.4, dummy=yes,
-				AC_MSG_ERROR(D-Bus >= 1.4 is required))
+PKG_CHECK_MODULES(DBUS, dbus-1 >= 1.6, dummy=yes,
+				AC_MSG_ERROR(D-Bus >= 1.6 is required))
 AC_SUBST(DBUS_CFLAGS)
 AC_SUBST(DBUS_LIBS)