diff --git a/core/tests/Drupal/FunctionalJavascriptTests/JavascriptTestBase.php b/core/tests/Drupal/FunctionalJavascriptTests/JavascriptTestBase.php
index dd2286c991..55b1284f70 100644
--- a/core/tests/Drupal/FunctionalJavascriptTests/JavascriptTestBase.php
+++ b/core/tests/Drupal/FunctionalJavascriptTests/JavascriptTestBase.php
@@ -2,7 +2,6 @@
 
 namespace Drupal\FunctionalJavascriptTests;
 
-use Behat\Mink\Exception\DriverException;
 use Drupal\Tests\BrowserTestBase;
 use Zumba\GastonJS\Exception\DeadClient;
 use Zumba\Mink\Driver\PhantomJSDriver;
@@ -27,7 +26,7 @@
    */
   protected function initMink() {
     if ($this->minkDefaultDriverClass === DrupalSelenium2Driver::class) {
-      $this->minkDefaultDriverArgs = ['chrome', null, 'http://localhost:4444/'];
+      $this->minkDefaultDriverArgs = ['chrome', NULL, 'http://localhost:4444/'];
     }
     elseif ($this->minkDefaultDriverClass === PhantomJSDriver::class) {
       // Set up the template cache used by the PhantomJS mink driver.
@@ -47,9 +46,6 @@ protected function initMink() {
     catch (DeadClient $e) {
       $this->markTestSkipped('PhantomJS is either not installed or not running. Start it via phantomjs --ssl-protocol=any --ignore-ssl-errors=true vendor/jcalderonzumba/gastonjs/src/Client/main.js 8510 1024 768&');
     }
-    catch (DriverException $e) {
-      $this->markTestSkipped($e->getMessage());
-    }
     catch (\Exception $e) {
       $this->markTestSkipped('An unexpected error occurred while starting Mink: ' . $e->getMessage());
     }
diff --git a/core/tests/README.md b/core/tests/README.md
index 6f0d47f680..ea42929058 100644
--- a/core/tests/README.md
+++ b/core/tests/README.md
@@ -40,7 +40,9 @@ For help installing and starting selenium, see http://mink.behat.org/en/latest/d
 
 * Make sure you have a recent version of chrome installed
 
-* Perform the required installs once:
+* Perform the required installs
+
+Example for Mac:
 
 ```
 brew install selenium-server-standalone