diff --git a/htdocs/langs/en_US/cron.lang b/htdocs/langs/en_US/cron.lang
index f2184b50b08..57e61b2f381 100644
--- a/htdocs/langs/en_US/cron.lang
+++ b/htdocs/langs/en_US/cron.lang
@@ -16,6 +16,7 @@ KeyForCronAccess=Security key for URL to launch cron jobs
 FileToLaunchCronJobs=Command line to launch cron jobs
 CronExplainHowToRunUnix=On Unix environment you should use the following crontab entry to run the command line each 5 minutes 
 CronExplainHowToRunWin=On Microsoft(tm) Windows environement you can use Scheduled task tools to run the command line each 5 minutes
+CronMethodDoesNotExists=Class %s does not contains any method %s
 # Menu
 CronJobs=Scheduled jobs
 CronListActive=List of enabled/scheduled jobs