diff --git a/externals/olafmatt/shoutamp~/shoutamp~.c b/externals/olafmatt/shoutamp~/shoutamp~.c
index cb70266249d665cc9b47ab8f7a7270b09a474e6d..3adb0e15c176c827c1ead06e55808b7212f5565b 100644
--- a/externals/olafmatt/shoutamp~/shoutamp~.c
+++ b/externals/olafmatt/shoutamp~/shoutamp~.c
@@ -1771,10 +1771,10 @@ void shoutamp_tilde_setup(void)
     	(t_method)shoutamp_free, sizeof(t_shoutamp), 0, A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, 0);
     class_addfloat(shoutamp_class, (t_method)shoutamp_float);
     class_addmethod(shoutamp_class, (t_method)shoutamp_disconnect, gensym("disconnect"), 0);
-    class_addmethod(shoutamp_class, (t_method)shoutamp_dsp, gensym("dsp"), 0);
+    class_addmethod(shoutamp_class, (t_method)shoutamp_dsp, gensym("dsp"), A_CANT, 0);
     class_addmethod(shoutamp_class, (t_method)shoutamp_connect, gensym("connect"), A_GIMME, 0);
     class_addmethod(shoutamp_class, (t_method)shoutamp_connect_url, gensym("connecturl"), A_SYMBOL, 0);
     class_addmethod(shoutamp_class, (t_method)shoutamp_recover, gensym("recover"), A_FLOAT, 0);
     class_addmethod(shoutamp_class, (t_method)shoutamp_print, gensym("print"), 0);
     class_sethelpsymbol(shoutamp_class, gensym("help-shoutamp~.pd"));
-}
\ No newline at end of file
+}