diff --git a/gists.org b/gists.org
index b145e64..1a84b96 100644
--- a/gists.org
+++ b/gists.org
@@ -609,7 +609,7 @@ An improved version was [[https://github.com/xenodium/dwim-shell-command/commit/
     (interactive (append (list (read-command "Command: "))
                          (my/read-list)))
     (mapc (lambda (arg)
-            (with-demoted-errors "Error: %S"
+            (with-demoted-errors
               (funcall command arg)))
           arguments))
 #+end_src
diff --git a/gists/execute-command-repeatedly.el b/gists/execute-command-repeatedly.el
index c67897a..f95bbe4 100644
--- a/gists/execute-command-repeatedly.el
+++ b/gists/execute-command-repeatedly.el
@@ -25,6 +25,6 @@ value."
   (interactive (append (list (read-command "Command: "))
                        (my/read-list)))
   (mapc (lambda (arg)
-          (with-demoted-errors "Error: %S"
+          (with-demoted-errors
             (funcall command arg)))
         arguments))