diff --git a/htdocs/core/lib/date.lib.php b/htdocs/core/lib/date.lib.php
index 735b1c676b9..636a4ef4907 100644
--- a/htdocs/core/lib/date.lib.php
+++ b/htdocs/core/lib/date.lib.php
@@ -219,7 +219,8 @@ function convertTime2Seconds($iHours = 0, $iMinutes = 0, $iSeconds = 0)
  *      Can be used to show a duration.
  *
  *    	@param      int		$iSecond		Number of seconds
- *    	@param      string	$format		    Output format ('all': total delay days hour:min like "2 days 12:30",
+ *    	@param      string	$format		    Output format
+ *    										- 'all': total delay days hour:min like "2 days 12:30",
  *                                          - 'allwithouthour': total delay days without hour part like "2 days",
  *                                          - 'allhourmin': total delay with format hours:min like "60:30",
  *                                          - 'allhourminsec': total delay with format hours:min:sec like "60:30:10",
diff --git a/htdocs/cron/list.php b/htdocs/cron/list.php
index f3e774bb82a..b8cb76bc7c1 100644
--- a/htdocs/cron/list.php
+++ b/htdocs/cron/list.php
@@ -649,8 +649,8 @@ if ($num > 0) {
 		// Duration
 		print '<td class="center" title="'.dol_escape_htmltag($datefromto).'">';
 		if (!empty($datelastresult) && ($datelastresult >= $datelastrun)) {
-			print convertSecondToTime(max($datelastresult - $datelastrun, 1), 'all');
-			//print '<br>'.($datelastresult - $datelastrun).' '.$langs->trans("seconds");
+			$nbseconds = max($datelastresult - $datelastrun, 1);
+			print $nbseconds.' '.($nbseconds > 1 ? $langs->trans("SecondShort") : $langs->trans("SecondShort"));
 		}
 		print '</td>';
 
diff --git a/htdocs/langs/en_US/main.lang b/htdocs/langs/en_US/main.lang
index a5ad75f9f1f..29bd547f2b1 100644
--- a/htdocs/langs/en_US/main.lang
+++ b/htdocs/langs/en_US/main.lang
@@ -346,6 +346,7 @@ MonthOfDay=Month of the day
 DaysOfWeek=Days of week
 HourShort=H
 MinuteShort=mn
+SecondShort=sec
 Rate=Rate
 CurrencyRate=Currency conversion rate
 UseLocalTax=Include tax