diff --git a/src/polkitbackend/polkitbackendsessionmonitor-systemd.c b/src/polkitbackend/polkitbackendsessionmonitor-systemd.c
index 1a6107a..3abd7c5 100644
--- a/src/polkitbackend/polkitbackendsessionmonitor-systemd.c
+++ b/src/polkitbackend/polkitbackendsessionmonitor-systemd.c
@@ -106,7 +106,7 @@ sd_source_new (void)
   source = g_source_new (&sd_source_funcs, sizeof (SdSource));
   sd_source = (SdSource *)source;
 
-  if ((ret = sd_login_monitor_new (NULL, &sd_source->monitor)) < 0)
+  if ((ret = sd_login_monitor_new ("session", &sd_source->monitor)) < 0)
     {
       g_printerr ("Error getting login monitor: %d", ret);
     }