diff --git a/core/lib/Drupal/Core/StringTranslation/StringTranslationTrait.php b/core/lib/Drupal/Core/StringTranslation/StringTranslationTrait.php
index dcd1e59..9ae41ea 100644
--- a/core/lib/Drupal/Core/StringTranslation/StringTranslationTrait.php
+++ b/core/lib/Drupal/Core/StringTranslation/StringTranslationTrait.php
@@ -10,12 +10,13 @@
 /**
  * Wrapper methods for \Drupal\Core\StringTranslation\TranslationInterface.
  *
- * The supported way to work with injected translation in Drupal 8 so that the
- * string extractor can find strings is by using a protected t() method wrapping
- * \Drupal\Core\StringTranslation\TranslationInterface::translate(). This trait
- * provides this method in a re-usable way.
- * Procedural code should use t(). Any other way will result to untranslatable
- * strings since the string extractor will not be able to find them.
+ * Injected translation can be performed by using a protected method ::t(), so
+ * string extractor tools can find all translatable strings. This method must wrap
+ * \Drupal\Core\StringTranslation\TranslationInterface::translate().
+ * This trait provides this method in a re-usable way.
+ * Procedural code must use the global function t(). Any other approach will
+ * result in untranslatable strings, because the string extractor will not be
+ * able to find them.
  */
 trait StringTranslationTrait {
 
diff --git a/core/tests/Drupal/Tests/Core/StringTranslation/StringTranslationTraitTest.php b/core/tests/Drupal/Tests/Core/StringTranslation/StringTranslationTraitTest.php
index 10bcafb..4c7eb33 100644
--- a/core/tests/Drupal/Tests/Core/StringTranslation/StringTranslationTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/StringTranslation/StringTranslationTraitTest.php
@@ -10,9 +10,10 @@
 use Drupal\Tests\UnitTestCase;
 
 /**
- * Tests the string translation trait.
+ * Tests \Drupal\Core\StringTranslation\StringTranslationTrait.
  *
  * @see \Drupal\Core\StringTranslation\StringTranslationTrait
+ * @coversDefaultClass \Drupal\Core\StringTranslation\StringTranslationTrait
  *
  * @group Drupal
  * @group StringTranslation
@@ -39,8 +40,7 @@ class StringTranslationTraitTest extends UnitTestCase {
    */
   public static function getInfo() {
     return array(
-      'name' => 'String translation trait',
-      'description' => 'Tests the string translation trait.',
+      'name' => '\Drupal\Core\StringTranslation\StringTranslationTrait unit test',
       'group' => 'StringTranslation',
     );
   }
@@ -55,7 +55,7 @@ public function setUp() {
   }
 
   /**
-   * Tests \Drupal\Core\StringTranslation\StringTranslationTrait::t()
+   * @covers ::t
    */
   public function testT() {
     $method = $this->reflection->getMethod('t');
@@ -65,7 +65,7 @@ public function testT() {
   }
 
   /**
-   * Tests \Drupal\Core\StringTranslation\StringTranslationTrait::formatPlural()
+   * @covers ::formatPlural
    */
   public function testFormatPlural() {
     $method = $this->reflection->getMethod('formatPlural');