diff --git a/js/site.js b/js/site.js
index 1ede0c0..ed28c12 100644
--- a/js/site.js
+++ b/js/site.js
@@ -48,7 +48,7 @@ $(document).ready(function() {
     });
     $("body").on("input", "input[name=url]", function() {
         if($("input[name=url]").val().startsWith("reboot")) {
-            $("#url-description").html("This job triggers a reboot. Please use <pre>reboot cmd={{command}}&services={{command}}</pre> to modify the reboot and get services commands. You can use {}+ in the reboot command to use the Reboot wait configuration value");
+            $("#url-description").html("This job triggers a reboot. Please use <pre>reboot cmd={{command}}&services={{command}}</pre> to modify the reboot and get services commands. You can use {s}+ or {m}+ in the reboot command to use the Reboot wait configuration value ({s}+ will convert to seconds, {m}+ to minutes)");
             $("label[for=expected]").html("Capture services after reboot? (1: yes; 0: no)");
             $("input[name=expected]").attr("placeholder", "1");
         } else {
diff --git a/webcron.php b/webcron.php
index b125fdd..29a56fe 100644
--- a/webcron.php
+++ b/webcron.php
@@ -140,11 +140,12 @@ if(file_exists("cache/reboot.trigger")) {
             $cmd = $rebootcommands['cmd'];
 
             if ($cmd == '') {
-                $cmd = 'sudo shutdown -r +{}+ "A reboot has been scheduled. Please save your work."';
-                $cmd = str_replace("{}+", intdiv(get_configvalue('jobs.rebootwait'), 60), $cmd);
+                $cmd = 'sudo shutdown -r +{m}+ "A reboot has been scheduled. Please save your work."';
             }
 
-            $cmd = str_replace("{}+", get_configvalue('jobs.rebootwait'), $cmd);
+            $cmd = str_replace("{m}+", intdiv(get_configvalue('jobs.rebootwait'), 60), $cmd);
+            $cmd = str_replace("{s}+", get_configvalue('jobs.rebootwait'), $cmd);
+            
             $url = "ssh " . $job['host'] . " '" . $cmd . " &'";
             exec($url);
             $cmd = '';