diff -u b/core/modules/simpletest/src/RandomGeneratorTrait.php b/core/modules/simpletest/src/RandomGeneratorTrait.php
--- b/core/modules/simpletest/src/RandomGeneratorTrait.php
+++ b/core/modules/simpletest/src/RandomGeneratorTrait.php
@@ -7,7 +7,7 @@
 /**
  * Provides random generator utility methods.
  *
- * @deprecated in Drupal 8.2.0, will be removed before Drupal 9.0.0.
+ * @deprecated in Drupal 8.1.1, will be removed before Drupal 9.0.0.
  * The trait was moved to another namespace.
  *
  * @see \Drupal\Tests
diff -u b/core/modules/simpletest/src/SessionTestTrait.php b/core/modules/simpletest/src/SessionTestTrait.php
--- b/core/modules/simpletest/src/SessionTestTrait.php
+++ b/core/modules/simpletest/src/SessionTestTrait.php
@@ -7,7 +7,7 @@
 /**
  * Provides methods to generate and get session name in tests.
  *
- * @deprecated in Drupal 8.2.0 will be removed before 9.0.0.
+ * @deprecated in Drupal 8.1.1 will be removed before 9.0.0.
  * This was moved to another namespace.
  *
  * @see \Drupal\Tests
diff -u b/core/modules/simpletest/src/TestBase.php b/core/modules/simpletest/src/TestBase.php
--- b/core/modules/simpletest/src/TestBase.php
+++ b/core/modules/simpletest/src/TestBase.php
@@ -2,7 +2,6 @@
 
 namespace Drupal\simpletest;
 
-use Behat\Mink\Session;
 use Drupal\Component\Render\MarkupInterface;
 use Drupal\Component\Utility\Crypt;
 use Drupal\Component\Utility\SafeMarkup;
diff -u b/core/modules/simpletest/src/WebAssert.php b/core/modules/simpletest/src/WebAssert.php
--- b/core/modules/simpletest/src/WebAssert.php
+++ b/core/modules/simpletest/src/WebAssert.php
@@ -7,7 +7,7 @@
 /**
  * Defines a class with methods for asserting presence of elements during tests.
  *
- * @deprecated in Drupal 8.2.0 will be removed before 9.0.0.
+ * @deprecated in Drupal 8.1.1 will be removed before 9.0.0.
  * This was moved to another namespace.
  *
  * @see \Drupal\Tests
diff -u b/core/tests/Drupal/Tests/BrowserTestBase.php b/core/tests/Drupal/Tests/BrowserTestBase.php
--- b/core/tests/Drupal/Tests/BrowserTestBase.php
+++ b/core/tests/Drupal/Tests/BrowserTestBase.php
@@ -20,9 +20,6 @@
 use Drupal\Core\StreamWrapper\StreamWrapperInterface;
 use Drupal\Core\Test\TestRunnerKernel;
 use Drupal\Core\Url;
-use Drupal\Tests\RandomGeneratorTrait;
-use Drupal\Tests\SessionTestTrait;
-use Drupal\Tests\WebAssert as WebAssertClass;
 use Drupal\user\Entity\Role;
 use Drupal\user\Entity\User;
 use Drupal\user\UserInterface;
@@ -533,7 +530,7 @@
    *   A new web-assert option for asserting the presence of elements with.
    */
   public function assertSession($name = NULL) {
-    return new WebAssertClass($this->getSession($name));
+    return new WebAssert($this->getSession($name));
   }
 
   /**