diff --git a/modules/system/system.test b/modules/system/system.test
index 59c632a..eca5ebb 100644
--- a/modules/system/system.test
+++ b/modules/system/system.test
@@ -1362,6 +1362,8 @@ class FrontPageTestCase extends DrupalWebTestCase {
 }
 
 class SystemBlockTestCase extends DrupalWebTestCase {
+  protected $profile = 'testing';
+
   public static function getInfo() {
     return array(
       'name' => 'Block functionality',
@@ -1371,7 +1373,7 @@ class SystemBlockTestCase extends DrupalWebTestCase {
   }
 
   function setUp() {
-    parent::setUp();
+    parent::setUp('block');
 
     // Create and login user
     $admin_user = $this->drupalCreateUser(array('administer blocks'));
@@ -1379,9 +1381,9 @@ class SystemBlockTestCase extends DrupalWebTestCase {
   }
 
   /**
-   * Test displaying and hiding the powered-by block.
+   * Test displaying and hiding the powered-by and help blocks.
    */
-  function testPoweredByBlock() {
+  function testSystemBlocks() {
     // Set block title and some settings to confirm that the interface is available.
     $this->drupalPost('admin/structure/block/manage/system/powered-by/configure', array('title' => $this->randomName(8)), t('Save block'));
     $this->assertText(t('The block configuration has been saved.'), t('Block configuration set.'));
@@ -1389,6 +1391,7 @@ class SystemBlockTestCase extends DrupalWebTestCase {
     // Set the powered-by block to the footer region.
     $edit = array();
     $edit['blocks[system_powered-by][region]'] = 'footer';
+    $edit['blocks[system_main][region]'] = 'content';
     $this->drupalPost('admin/structure/block', $edit, t('Save blocks'));
     $this->assertText(t('The block settings have been updated.'), t('Block successfully moved to footer region.'));
 
@@ -1409,6 +1412,18 @@ class SystemBlockTestCase extends DrupalWebTestCase {
     $edit['blocks[system_powered-by][region]'] = 'footer';
     $this->drupalPost('admin/structure/block', $edit, t('Save blocks'));
     $this->drupalPost('admin/structure/block/manage/system/powered-by/configure', array('title' => ''), t('Save block'));
+
+    // Set the help block to the help region.
+    $edit = array();
+    $edit['blocks[system_help][region]'] = 'help';
+    $this->drupalPost('admin/structure/block', $edit, t('Save blocks'));
+
+    // Test displaying the help block with block caching enabled.
+    variable_set('block_cache', TRUE);
+    $this->drupalGet('admin/structure/block/add');
+    $this->assertRaw(t('Use this page to create a new custom block.'));
+    $this->drupalGet('admin/structure/block');
+    $this->assertRaw(t('This page provides a drag-and-drop interface for assigning a block to a region, and for controlling the order of blocks within regions. Since not all themes implement the same regions, or display regions in the same way, blocks are positioned on a per-theme basis. Remember that your changes will not be saved until you click the <em>Save blocks</em> button at the bottom of the page. Click the <em>configure</em> link next to each block to configure its specific title and visibility settings.'));
   }
 }