diff --git a/core/modules/rdf/lib/Drupal/rdf/Tests/UserAttributesTest.php b/core/modules/rdf/lib/Drupal/rdf/Tests/UserAttributesTest.php
index baa55b8..55df929 100644
--- a/core/modules/rdf/lib/Drupal/rdf/Tests/UserAttributesTest.php
+++ b/core/modules/rdf/lib/Drupal/rdf/Tests/UserAttributesTest.php
@@ -50,7 +50,7 @@ public function setUp() {
   function testUserAttributesInMarkup() {
     // Creates users that should and should not be truncated
     // by template_preprocess_username (20 characters)
-    // one of these users tests right on the cusp (20)
+    // one of these users tests right on the cusp (20).
     $user1 = $this->drupalCreateUser(array('access user profiles'));
 
     $authors = array(
@@ -90,7 +90,7 @@ function testUserAttributesInMarkup() {
       $node = $this->drupalCreateNode(array('type' => 'article', 'promote' => 1));
       $this->drupalLogin($user1);
 
-      // Parses the node created by the user 
+      // Parses the node created by the user.
       $parser = new \EasyRdf_Parser_Rdfa();
       $graph = new \EasyRdf_Graph();
       $base_uri = url('<front>', array('absolute' => TRUE));
diff --git a/core/modules/rdf/rdf.module b/core/modules/rdf/rdf.module
index 75270ce..8231625 100644
--- a/core/modules/rdf/rdf.module
+++ b/core/modules/rdf/rdf.module
@@ -410,7 +410,7 @@ function rdf_preprocess_username(&$variables) {
     $attributes['rel'] = $homepage_mapping['properties'];
   }
   // Long usernames are truncated by template_preprocess_username().
-  // In these cases, store the full username in the 'content' attribute.
+  // Assert the full name in the content attribute so it can be extracted in RDFa.
   if ($variables['truncated']) {
     $attributes['content'] = check_plain($variables['name_raw']);
   }