diff --git a/core/core.api.php b/core/core.api.php
index 71ec024..9e422c0 100644
--- a/core/core.api.php
+++ b/core/core.api.php
@@ -1091,7 +1091,7 @@
  * write a PHPUnit test:
  * - Define a class that extends \Drupal\Tests\UnitTestCase.
  * - The class name needs to end in the word Test.
- * - The namespace must be a subspace/subdirectory of \Drupal\yourmodule\Tests,
+ * - The namespace must be a subspace/subdirectory of \Drupal\yourmodule\Tests\Unit,
  *   where yourmodule is your module's machine name.
  * - The test class file must be named and placed under the
  *   yourmodule/tests/src/Unit directory, according to the PSR-4 standard.
@@ -1117,10 +1117,8 @@
  *   (similar to what the installer and update scripts use). To use this test
  *   class, you will need to create the database tables you need and install
  *   needed modules manually.
- * - The namespace must be a subspace/subdirectory of \Drupal\yourmodule\Tests,
- *   where yourmodule is your module's machine name.
- * - The test class file must be named and placed under the yourmodule/src/Tests
- *   directory, according to the PSR-4 standard.
+ * - The test needs to go in yourmodule/tests/src/Kernel and have a namespace
+ *   of \Drupal\yourmodule\Tests\Kernel
  * - Your test class needs a phpDoc comment block with a description and
  *   a @group annotation, which gives information about the test.
  * - You may also override the default setUp() method, which can set be used to
@@ -1168,7 +1166,7 @@
  * To write a functional test that relies on JavaScript:
  * - Extend \Drupal\FunctionalJavaScriptTests\JavascriptTestBase.
  * - Place the test into the yourmodule/tests/src/FunctionalJavascript/
- *   directory and use the \Drupal\Tests\yourmodule\FunctionalJavascript
+ *   directory and use the \Drupal\yourmodule\Tests\FunctionalJavascript
  *   namespace.
  * - Add a @group annotation. Use yourmodule as the group name if the test does
  *   not belong to another larger group.