diff --git a/bots/send-nagios-notification b/bots/send-nagios-notification
index fc41a59..3caa0ca 100755
--- a/bots/send-nagios-notification
+++ b/bots/send-nagios-notification
@@ -40,8 +40,8 @@ msg['content'] = '**%s**: %s is %s' % (opts.type, thing, opts.state)
 # We will be more conservative and handle just this one escape sequence.
 output = (opts.output + '\n' + opts.long_output.replace(r'\n', '\n')).strip()
 if output:
-    # Block-quote any command output.
-    msg['content'] += ('\n\n' + '\n'.join('> ' + ln for ln in output.splitlines()))
+    # Put any command output in a code block.
+    msg['content'] += ('\n\n~~~~\n' + output + "\n~~~~\n")
 
 client = humbug.Client(
     email   = 'humbug+nagios@humbughq.com',