diff --git a/lisp/custom.el b/lisp/custom.el
index 2a92f070096..59b15032de1 100644
--- a/lisp/custom.el
+++ b/lisp/custom.el
@@ -1846,7 +1846,9 @@ overwrite with %S?"
                                           var (symbol-value var) val)))))
       (customize-save-variable
        var val
-       (format "Copied from %s by `copy-theme-options'" theme)))))
+       (format "Copied from %s by `copy-theme-options'" theme))))
+  ;; FIXME: Now offer to disable THEME.
+  )
 
 (provide 'custom)