diff --git a/README.txt b/README.txt
index 2061e17..d5b5e95 100644
--- a/README.txt
+++ b/README.txt
@@ -68,4 +68,4 @@ LIMITATIONS
    URL. When loaded on the same page, there will be a conflict. The way to
    resolve this issue is use one Cloud Player Library URL (the default defined
    on the General Settings page at /admin/config/media/jw_player/settings), and
-   set each preset used on the page to have Drupal-defined settings.
\ No newline at end of file
+   set each preset used on the page to have Drupal-defined settings.
diff --git a/config/install/jw_player.settings.yml b/config/install/jw_player.settings.yml
index 3f07c94..fe3fef8 100644
--- a/config/install/jw_player.settings.yml
+++ b/config/install/jw_player.settings.yml
@@ -1,3 +1,3 @@
 jw_player_key: null
 jw_player_version: 6
-jw_player_hosting: cloud
\ No newline at end of file
+jw_player_hosting: cloud
diff --git a/src/Element/JwPlayer.php b/src/Element/JwPlayer.php
index aad2cf7..fb9fd5d 100644
--- a/src/Element/JwPlayer.php
+++ b/src/Element/JwPlayer.php
@@ -113,11 +113,18 @@ class JwPlayer extends RenderElement {
     // Unset sharing if it is not set.
     if (isset($settings['sharing']) && $settings['sharing']) {
       unset($settings['sharing']);
+      $settings['sharing']['sites'] = [];
       foreach($settings['sharing_sites']['sites'] as $key => $value) {
         if ($value['enabled'] == 1) {
           $settings['sharing']['sites'][] = $key;
         }
       }
+      // If none selected, all selected.
+      if (!$settings['sharing']['sites']) {
+        foreach($settings['sharing_sites']['sites'] as $key => $value) {
+          $settings['sharing']['sites'][] = $key;
+        }
+      }
       $settings['sharing']['heading'] = $settings['sharing_heading'];
     }
     unset($settings['sharing_sites']);
diff --git a/src/Form/JwplayerPresetAdd.php b/src/Form/JwplayerPresetAdd.php
index 6fbb0f1..a71a4cb 100644
--- a/src/Form/JwplayerPresetAdd.php
+++ b/src/Form/JwplayerPresetAdd.php
@@ -1,8 +1,4 @@
 <?php
-/**
- * @file
- * Contains \Drupal\jw_player\Form\JwplayerSettingsForm.
- */
 
 namespace Drupal\jw_player\Form;
 
@@ -356,6 +352,7 @@ class JwplayerPresetAdd extends EntityForm {
         '#type' => 'table',
         '#header' => [t('Label'), t('Weight')],
         '#empty' => t('There are no items yet. Add an item.'),
+        '#suffix' => '<div class="description">' . $this->t('The social networks sites that are enabled for sharing. Select none to allow all sharing sites.') .'</div>',
         '#tabledrag' => [
           [
             'action' => 'order',
diff --git a/src/Form/JwplayerSettingsForm.php b/src/Form/JwplayerSettingsForm.php
index 365570b..e926fab 100644
--- a/src/Form/JwplayerSettingsForm.php
+++ b/src/Form/JwplayerSettingsForm.php
@@ -1,8 +1,4 @@
 <?php
-/**
- * @file
- * Contains \Drupal\jw_player\Form\JwplayerSettingsForm.
- */
 
 namespace Drupal\jw_player\Form;
 
diff --git a/src/Plugin/Field/FieldFormatter/JwplayerFormatter.php b/src/Plugin/Field/FieldFormatter/JwplayerFormatter.php
index 9eea8bb..242078a 100644
--- a/src/Plugin/Field/FieldFormatter/JwplayerFormatter.php
+++ b/src/Plugin/Field/FieldFormatter/JwplayerFormatter.php
@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\link\Plugin\field\formatter\LinkFormatter.
- */
-
 namespace Drupal\jw_player\Plugin\Field\FieldFormatter;
 
 use Drupal\Core\Cache\Cache;
diff --git a/src/Tests/JwPlayer7ConfigurationTest.php b/src/Tests/JwPlayer7ConfigurationTest.php
index fd394ab..3983272 100644
--- a/src/Tests/JwPlayer7ConfigurationTest.php
+++ b/src/Tests/JwPlayer7ConfigurationTest.php
@@ -1,8 +1,4 @@
 <?php
-/**
- * @file
- * Contains \Drupal\jw_player\JwPlayer7ConfigurationTest.
- */
 
 namespace Drupal\jw_player\Tests;
 
diff --git a/src/Tests/JwPlayerConfigurationTest.php b/src/Tests/JwPlayerConfigurationTest.php
index bd1a151..53e4d27 100644
--- a/src/Tests/JwPlayerConfigurationTest.php
+++ b/src/Tests/JwPlayerConfigurationTest.php
@@ -1,8 +1,4 @@
 <?php
-/**
- * @file
- * Contains \Drupal\jw_player\JwPlayerConfigurationTest.
- */
 
 namespace Drupal\jw_player\Tests;