diff --git a/core/modules/simpletest/src/WebTestBase.php b/core/modules/simpletest/src/WebTestBase.php
index 84a9411..1fc71b2 100644
--- a/core/modules/simpletest/src/WebTestBase.php
+++ b/core/modules/simpletest/src/WebTestBase.php
@@ -65,12 +65,12 @@
   /**
    * Set to the maximum number of MB of memory usage to allow on the child site.
    *
-   * The minimum about of memory Drupal expects is defined by
-   * DRUPAL_MINIMUM_PHP_MEMORY_LIMIT. This value should either by equal or less
-   * to conform to this requirement. If a module requires more memory than the
-   * module should add a check to its hook_requirements and use the higher value
-   * in it's tests. The check can be disabled for a specific tests by setting it
-   * to FALSE.
+   * The minimum amount of memory Drupal expects to have available is defined by
+   * DRUPAL_MINIMUM_PHP_MEMORY_LIMIT. This value should either be equal or less
+   * to DRUPAL_MINIMUM_PHP_MEMORY_LIMIT. If a module requires more memory than
+   * this the module should add a check to its hook_requirements and use the
+   * higher value in it's tests. The check can be disabled for a specific test
+   * by setting it to FALSE.
    *
    * @var string|FALSE
    */