diff --git a/pd/src/m_glob.c b/pd/src/m_glob.c
index 1f2b49bbff9a19718e87201fc7ea5aae765cf760..87f00fb38df85531c42ee47c8f0c2a6a76f19738 100644
--- a/pd/src/m_glob.c
+++ b/pd/src/m_glob.c
@@ -167,6 +167,8 @@ void glob_init(void)
         gensym("version"), A_FLOAT, 0);
     class_addmethod(glob_pdobject, (t_method)glob_perf,
         gensym("perf"), A_FLOAT, 0);
+    class_addmethod(glob_pdobject, (t_method)glob_compatibility,
+        gensym("compatibility"), A_FLOAT, 0);
     class_addmethod(glob_pdobject, (t_method)glob_clipboard_text,
         gensym("clipboardtext"), A_FLOAT, 0);
     class_addmethod(glob_pdobject, (t_method)glob_gui_prefs,