diff --git a/lisp/comint.el b/lisp/comint.el
index 56082f622a..88eaf1120e 100644
--- a/lisp/comint.el
+++ b/lisp/comint.el
@@ -1110,7 +1110,8 @@ comint-dynamic-list-input-ring
 	  (use-local-map keymap))
 	(forward-line 3)
 	(while (search-backward "completion" nil 'move)
-	  (replace-match "history reference")))
+	  (replace-match (apply #'propertize "history reference"
+				(text-properties-at (point))))))
       (sit-for 0)
       (message "Hit space to flush")
       (setq comint-dynamic-list-input-ring-window-conf conf)
diff --git a/lisp/minibuffer.el b/lisp/minibuffer.el
index f60af482da..a4a04fc4ec 100644
--- a/lisp/minibuffer.el
+++ b/lisp/minibuffer.el
@@ -1895,9 +1980,7 @@ completions-detailed
   :version "28.1")
 
 (defcustom completions-header-format
-  (propertize "%s possible completions:\n"
-              'face 'shadow
-              :help "Please select a completion")
+  (propertize "%s possible completions:\n" 'face 'shadow)
   "Format of completions header.
 It may contain one %s to show the total count of completions.
 When nil, no header is shown."