diff --git a/eldoc-box.el b/eldoc-box.el
index c066b07..4019b6e 100644
--- a/eldoc-box.el
+++ b/eldoc-box.el
@@ -93,7 +93,7 @@
   (interactive)
   ;; TODO
   (when eldoc-box--frame
-    (delete-frame eldoc-box--frame t)))
+    (make-frame-invisible eldoc-box--frame t)))
 
 ;;;; Backstage
 ;;;;; Variable