diff --git a/ChangeLog b/ChangeLog
index 4f578a54709..bbf3ace694e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -159,7 +159,7 @@ WARNING:
 
 Following changes may create regressions for some external modules, but were necessary to make Dolibarr better:
 * PHP 5.4 is no more supported. Minimum PHP is now 5.5+.
-* The PHP extension php-intl is not mandatory but should be installed to have new features working correctly.
+* The PHP extension php-intl is not mandatory and must be installed to have new features working correctly.
 * Method GetUrlTrackingStatus were renamed into getUrlTrackingStatus for consistency with naming rules.
 * API getListOfCivility has been renamed into getListOfCivilities for consistency with naming rules.
 * Deprecated function img_phone as been removed. You can use img_picto(..., 'call|call_out') instead.;