diff --git a/glib/glib-unix.c b/glib/glib-unix.c
index b616b8cbf..9328e7008 100644
--- a/glib/glib-unix.c
+++ b/glib/glib-unix.c
@@ -310,7 +310,7 @@ g_unix_fd_source_dispatch (GSource     *source,
 }
 
 GSourceFuncs g_unix_fd_source_funcs = {
-  NULL, NULL, g_unix_fd_source_dispatch, NULL
+  NULL, NULL, g_unix_fd_source_dispatch, NULL, NULL, NULL
 };
 
 /**