diff --git a/gio/gtlsconnection.c b/gio/gtlsconnection.c
index 995de6d64..e4ea38081 100644
--- a/gio/gtlsconnection.c
+++ b/gio/gtlsconnection.c
@@ -139,7 +139,8 @@ g_tls_connection_class_init (GTlsConnectionClass *klass)
 							 TRUE,
 							 G_PARAM_READWRITE |
 							 G_PARAM_CONSTRUCT |
-							 G_PARAM_STATIC_STRINGS));
+							 G_PARAM_STATIC_STRINGS |
+							 G_PARAM_DEPRECATED));
   /**
    * GTlsConnection:database:
    *