diff --git a/test/BaseInputFilterTest.php b/test/BaseInputFilterTest.php
index fb64254a..4b34b33a 100644
--- a/test/BaseInputFilterTest.php
+++ b/test/BaseInputFilterTest.php
@@ -830,6 +830,7 @@ public function testAddingExistingInputWillMergeIntoExisting()
 
     /**
      * @group 5270
+     * @requires extension intl
      */
     public function testIsValidWhenValuesSetOnFilters()
     {