diff --git a/gio/tests/gdbus-sessionbus.c b/gio/tests/gdbus-sessionbus.c
index 09d163969..f4dbb4ff9 100644
--- a/gio/tests/gdbus-sessionbus.c
+++ b/gio/tests/gdbus-sessionbus.c
@@ -71,3 +71,10 @@ session_bus_run (void)
 
   return ret;
 }
+
+const char *
+session_bus_get_address (void)
+{
+  g_assert (singleton != NULL);
+  return g_test_dbus_get_bus_address (singleton);
+}
diff --git a/gio/tests/gdbus-sessionbus.h b/gio/tests/gdbus-sessionbus.h
index bd6f2a2ad..9fa80336f 100644
--- a/gio/tests/gdbus-sessionbus.h
+++ b/gio/tests/gdbus-sessionbus.h
@@ -31,6 +31,7 @@ void session_bus_up   (void);
 void session_bus_stop (void);
 void session_bus_down (void);
 gint session_bus_run (void);
+const char *session_bus_get_address (void);
 
 G_END_DECLS