diff --git a/xfce4-session/xfsm-systemd.c b/xfce4-session/xfsm-systemd.c
index 3b69f0d..b6e24c8 100644
--- a/xfce4-session/xfsm-systemd.c
+++ b/xfce4-session/xfsm-systemd.c
@@ -95,9 +95,9 @@
 static void
 xfsm_systemd_finalize (GObject *object)
 {
-#ifdef HAVE_POLKIT
   XfsmSystemd *systemd = XFSM_SYSTEMD (object);
 
+#ifdef HAVE_POLKIT
   g_object_unref (G_OBJECT (systemd->authority));
   g_object_unref (G_OBJECT (systemd->subject));
 #endif