diff --git a/src/meta/meta-backend.h b/src/meta/meta-backend.h
index 49e252ade..78ad08b34 100644
--- a/src/meta/meta-backend.h
+++ b/src/meta/meta-backend.h
@@ -49,10 +49,6 @@ META_EXPORT
 void meta_backend_lock_layout_group (MetaBackend *backend,
                                      guint        idx);
 
-META_EXPORT
-void meta_backend_set_numlock (MetaBackend *backend,
-                               gboolean     numlock_state);
-
 META_EXPORT
 ClutterActor *meta_backend_get_stage (MetaBackend *backend);