diff --git a/settings/Controller/CheckSetupController.php b/settings/Controller/CheckSetupController.php
index 5f355d0ec2fb3016812174e6a9a8422ea520bc34..f1da8406edb5fe3912e4ca95b9b9420cf6f823bc 100644
--- a/settings/Controller/CheckSetupController.php
+++ b/settings/Controller/CheckSetupController.php
@@ -574,7 +574,7 @@ Raw output
 	protected function hasRecommendedPHPModules(): array {
 		$recommendedPHPModules = [];
 
-		if (!function_exists('grapheme_strlen')) {
+		if (!extension_loaded('intl')) {
 			$recommendedPHPModules[] = 'intl';
 		}