diff --git a/core/modules/book/book.module b/core/modules/book/book.module
index 3a48671..fa6e848 100644
--- a/core/modules/book/book.module
+++ b/core/modules/book/book.module
@@ -36,11 +36,11 @@ function book_help($route_name, RouteMatchInterface $route_match) {
       $output .= '<dd>' . t('The <em>Book page</em> content type is the initial content type enabled for book outlines. On the <a href="!admin-settings">Book settings page</a> you can configure content types that can used in book outlines.', array('!admin-settings' => \Drupal::url('book.settings'))) . '</dd>';
       $output .= '<dd>' . t('Users with the <em>Add content and child pages to books</em> permission will see a link to <em>Add child page</em> when viewing a content item that is part of a book outline. This link will allow users to create a new content item of the content type you select on the <a href="!admin-settings">Book settings page</a>. By default this is the <em>Book page</em> content type.', array('!admin-settings' => \Drupal::url('book.settings'))) . '</dd>';
       $output .= '<dt>' . t('Book navigation') . '</dt>';
-      $output .= '<dd>' . t("Book pages have a default book-specific navigation block. This navigation block contains links that lead to the previous and next pages in the book, and to the level above the current page in the book's structure. This block can be enabled on the <a href='!admin-block'>Blocks layout page</a>. For book pages to show up in the book navigation, they must be added to a book outline.", array('!admin-block' => (\Drupal::moduleHandler()->moduleExists('block')) ? \Drupal::url('block.admin_display') : '#')) . '</dd>';
+      $output .= '<dd>' . t('Book pages have a default book-specific navigation block. This navigation block contains links that lead to the previous and next pages in the book, and to the level above the current page in the book\'s structure. This block can be enabled on the <a href="!admin-block">Blocks layout page</a>. For book pages to show up in the book navigation, they must be added to a book outline.', array('!admin-block' => (\Drupal::moduleHandler()->moduleExists('block')) ? \Drupal::url('block.admin_display') : '#')) . '</dd>';
       $output .= '<dt>' . t('Collaboration') . '</dt>';
       $output .= '<dd>' . t('Books can be created collaboratively, as they allow users with appropriate permissions to add pages into existing books, and add those pages to a custom table of contents.') . '</dd>';
       $output .= '<dt>' . t('Printing books') . '</dt>';
-      $output .= '<dd>' . t("Users with the <em>View printer-friendly books</em> permission can select the <em>printer-friendly version</em> link visible at the bottom of a book page's content to generate a printer-friendly display of the page and all of its subsections.") . '</dd>';
+      $output .= '<dd>' . t('Users with the <em>View printer-friendly books</em> permission can select the <em>printer-friendly version</em> link visible at the bottom of a book page\'s content to generate a printer-friendly display of the page and all of its subsections.') . '</dd>';
       $output .= '</dl>';
       return $output;
 
diff --git a/core/modules/tracker/tracker.module b/core/modules/tracker/tracker.module
index fbd4d9a..5d12aa9 100644
--- a/core/modules/tracker/tracker.module
+++ b/core/modules/tracker/tracker.module
@@ -25,7 +25,7 @@ function tracker_help($route_name, RouteMatchInterface $route_match) {
       $output .= '<dt>' . t('Tracking new and updated site content') . '</dt>';
       $output .= '<dd>' . t('The <a href="!recent">Recent content</a> page shows new and updated content in reverse chronological order, listing the content type, title, author\'s name, number of comments, and time of last update. Content is considered updated when changes occur in the text, or when new comments are added. The <em>My recent content</em> tab limits the list to the currently logged-in user.', array('!recent' => \Drupal::url('tracker.page'))) . '</dd>';
       $output .= '<dt>' . t('Tracking user-specific content') . '</dt>';
-      $output .= '<dd>' . t("To follow a specific user's new and updated content, select the <em>Activity</em> tab from the user's profile page.") . '</dd>';
+      $output .= '<dd>' . t('To follow a specific user\'s new and updated content, select the <em>Activity</em> tab from the user\'s profile page.') . '</dd>';
       $output .= '</dl>';
       return $output;
   }