diff --git a/htdocs/core/modules/modMultiCurrency.class.php b/htdocs/core/modules/modMultiCurrency.class.php
index e7d2ded797a..607cb67468e 100644
--- a/htdocs/core/modules/modMultiCurrency.class.php
+++ b/htdocs/core/modules/modMultiCurrency.class.php
@@ -154,7 +154,7 @@ class modMultiCurrency extends DolibarrModules
 				'parameters' => '0,0,cron',
 				'comment' => 'Update all the currencies using the currencylayer API. An API key needs to be given in the multi-currency module config page to have this job working.<br>First param is not used, Second parameter is 0 to update only already existing currency defined into the Multicurrency module or 1 to add any currency. Third parameter must be "cron".',
 				'frequency' => 1,
-				'unitfrequency' => 2678400,
+				'unitfrequency' => 604800,
 				'status' => $statusatinstall,
 				'test' => 'isModEnabled("cron")',
 				'datestart' => $datestart