diff --git a/tests/suites/unit/joomla/string/JStringTest.php b/tests/suites/unit/joomla/string/JStringTest.php
index 15013819ce..31c184e1d8 100644
--- a/tests/suites/unit/joomla/string/JStringTest.php
+++ b/tests/suites/unit/joomla/string/JStringTest.php
@@ -403,6 +403,7 @@ public function testStrcmp($string1, $string2, $locale, $expect)
 		}
 		elseif ($locale != false && !setlocale(LC_COLLATE, $locale))
 		{
+			// If the locale is not available, we can't have to transcode the string and can't reliably compare it.
 			$this->markTestSkipped("Locale {$locale} is not available.");
 		}
 		else
diff --git a/tests/suites/unit/joomla/utilities/JArrayHelperTest.php b/tests/suites/unit/joomla/utilities/JArrayHelperTest.php
index 55c5e2d908..049cf8bccc 100644
--- a/tests/suites/unit/joomla/utilities/JArrayHelperTest.php
+++ b/tests/suites/unit/joomla/utilities/JArrayHelperTest.php
@@ -1488,6 +1488,7 @@ public function testSortObjects($input, $key, $direction, $casesensitive, $local
 		}
 		elseif ($locale != false && !setlocale(LC_COLLATE, $locale))
 		{
+			// If the locale is not available, we can't have to transcode the string and can't reliably compare it.
 			$this->markTestSkipped("Locale {$locale} is not available.");
 			return;
 		}