diff --git a/core/modules/image/src/Tests/ImageFieldValidateTest.php b/core/modules/image/src/Tests/ImageFieldValidateTest.php
index 7c0f45b..d6a590b 100644
--- a/core/modules/image/src/Tests/ImageFieldValidateTest.php
+++ b/core/modules/image/src/Tests/ImageFieldValidateTest.php
@@ -68,7 +68,7 @@ function testRequiredAttributes() {
 
     $this->uploadNodeImage($image, $field_name, 'article');
 
-    // look for form-required for the alt text
+    // Look for form-required for the alt text.
     $elements = $this->xpath('//label[@for="edit-' . $field_name . '-0-alt" and @class="form-required"]/following-sibling::input[@id="edit-' . $field_name . '-0-alt"]');
 
     $this->assertTrue(isset($elements[0]),'Required marker is shown for the required alt text.');