diff --git a/core/modules/language/tests/src/Unit/ConfigurableLanguageManagerTest.php b/core/modules/language/tests/src/Unit/ConfigurableLanguageManagerTest.php
index 11d8b48..8c8aada 100644
--- a/core/modules/language/tests/src/Unit/ConfigurableLanguageManagerTest.php
+++ b/core/modules/language/tests/src/Unit/ConfigurableLanguageManagerTest.php
@@ -135,9 +135,9 @@ public function testCurrentLanguageShouldSupportRecursion() {
     $language_negotiation_method_id = $config_id;
 
     // Mock the default language. Note that we have to use PHPUnit mocks for the
-    // languages, as Prophecy's method mocks will change their own state. During
-    // a custom array sort, this would trigger PHP "Array was modified by the
-    // user comparison function" errors.
+    // languages, as Prophecy's mocks will change their own state when their
+    // methods are called. During a custom array sort, this would trigger PHP
+    // "Array was modified by the user comparison function" errors.
     $default_language = $this->getMock(LanguageInterface::class);
     $this->defaultLanguage->get()->willReturn($default_language);