diff --git a/lisp/cus-edit.el b/lisp/cus-edit.el
index a696c471e8f..fd458300ca6 100644
--- a/lisp/cus-edit.el
+++ b/lisp/cus-edit.el
@@ -1582,6 +1582,7 @@ and `face'."
 		   (require load)
 		 (error nil)))
 	      ;; Don't reload a file already loaded.
+	      ((member load preloaded-file-list))
 	      ((assoc load load-history))
 	      ((assoc (locate-library load) load-history))
 	      (t