--- libgnome-2.15.1/libgnome/gnome-program.h
+++ libgnome-2.15.1/libgnome/gnome-program.h
@@ -226,7 +226,7 @@
 gnome_program_init (const char *app_id, const char *app_version,
 		    const GnomeModuleInfo *module_info,
 		    int argc, char **argv,
-		    const char *first_property_name, ...);
+		    const char *first_property_name, ...) G_GNUC_NULL_TERMINATED;
 
 GnomeProgram *
 gnome_program_initv (GType type,