diff --git a/core/modules/system/tests/src/Kernel/Entity/EntityLabelTest.php b/core/modules/system/tests/src/Kernel/Entity/EntityLabelTest.php
index d5f3ceed9a..486a043fbb 100644
--- a/core/modules/system/tests/src/Kernel/Entity/EntityLabelTest.php
+++ b/core/modules/system/tests/src/Kernel/Entity/EntityLabelTest.php
@@ -6,14 +6,14 @@
 use Drupal\KernelTests\KernelTestBase;
 
 /**
- * Tests entity's label are in proper casing.
+ * Tests that entity type labels use sentence-case.
  *
  * @group Entity
  */
 class EntityLabelTest extends KernelTestBase {
 
   /**
-   * Test to ensure that entity labels are in proper casing.
+   *  Tests that entity type labels use sentence-case.
    */
   public function testEntityLabelCasing() {
     $base_directory = $this->root . '/core/modules/';
@@ -36,8 +36,10 @@ public function testEntityLabelCasing() {
       $label_string = $label->getUntranslatedString();
       $collection_label_string = $collection_label->getUntranslatedString();
 
-      // Keep the first word as it is. Reason is we have special cases like
-      // RDF, URL alias etc. where we can't run strtolower() for entire string.
+      // Keep the first word as it is for nouns that are all capital letters
+      // (like RDF, URL alias etc.) so we can't run strtolower() for the entire
+      // string. Special cases may need to be added to this test in the future
+      // if an acronym is in a different position in the label.
       $first_word = strtok($label_string, " ");
       $remaining_string = strtolower(strstr($label_string, " "));
       $this->assertEquals($first_word . $remaining_string, $label_string);