diff --git a/htdocs/core/modules/modHoliday.class.php b/htdocs/core/modules/modHoliday.class.php
index 2d34cee5626..be0b39ecc7e 100644
--- a/htdocs/core/modules/modHoliday.class.php
+++ b/htdocs/core/modules/modHoliday.class.php
@@ -135,6 +135,28 @@ class modHoliday extends DolibarrModules
 		//$r++;
 
 
+		// Cronjobs
+		$arraydate = dol_getdate(dol_now());
+		$datestart = dol_mktime(4, 0, 0, $arraydate['mon'], $arraydate['mday'], $arraydate['year']);
+		$this->cronjobs = array(
+			0 => array(
+				'label' => 'HolidayBalanceMonthlyUpdate',
+				'jobtype' => 'method',
+				'class' => 'holiday/class/holiday.class.php',
+				'objectname' => 'Holiday',
+				'method' => 'updateBalance',
+				'parameters' => '',
+				'comment' => 'Update holiday balance every month',
+				'frequency' => 1,
+				'unitfrequency' => 3600 * 24,
+				'priority' => 50,
+				'status' => 1,
+				'test' => '$conf->holiday->enabled',
+				'datestart' => $datestart
+			)
+		);
+
+
 		// Permissions
 		$this->rights = array(); // Permission array used by this module
 		$r = 0;
diff --git a/htdocs/holiday/class/holiday.class.php b/htdocs/holiday/class/holiday.class.php
index 82229198185..527c0353486 100644
--- a/htdocs/holiday/class/holiday.class.php
+++ b/htdocs/holiday/class/holiday.class.php
@@ -227,7 +227,7 @@ class Holiday extends CommonObject
 
 		if ($result >= 0) {
 			$this->db->commit();
-			return 1;
+			return 0; // for cronjob use (0 is OK, any other value is an error code)
 		} else {
 			$this->db->rollback();
 			return -1;
diff --git a/htdocs/langs/en_US/holiday.lang b/htdocs/langs/en_US/holiday.lang
index 2393a02ee50..0e6b1d69b36 100644
--- a/htdocs/langs/en_US/holiday.lang
+++ b/htdocs/langs/en_US/holiday.lang
@@ -132,3 +132,4 @@ FreeLegalTextOnHolidays=Free text on PDF
 WatermarkOnDraftHolidayCards=Watermarks on draft leave requests
 HolidaysToApprove=Holidays to approve
 NobodyHasPermissionToValidateHolidays=Nobody has permission to validate holidays
+HolidayBalanceMonthlyUpdate=Monthly update of holiday balance
diff --git a/test/phpunit/HolidayTest.php b/test/phpunit/HolidayTest.php
index 418b81f8b41..4fbd57c212b 100644
--- a/test/phpunit/HolidayTest.php
+++ b/test/phpunit/HolidayTest.php
@@ -366,6 +366,6 @@ class HolidayTest extends PHPUnit\Framework\TestCase
 
 		$localobjecta->updateConfCP('lastUpdate', '20100101120000');
 		$result = $localobjecta->updateBalance();
-		$this->assertEquals($result, 1);
+		$this->assertEquals($result, 0);
 	}
 }