diff --git a/core/tests/Drupal/FunctionalJavascriptTests/Core/Form/JavascriptStatesTest.php b/core/tests/Drupal/FunctionalJavascriptTests/Core/Form/JavascriptStatesTest.php
index e1f0f31..7b7ae4d 100644
--- a/core/tests/Drupal/FunctionalJavascriptTests/Core/Form/JavascriptStatesTest.php
+++ b/core/tests/Drupal/FunctionalJavascriptTests/Core/Form/JavascriptStatesTest.php
@@ -29,19 +29,19 @@ public function testJavascriptStates() {
     $this->drupalGet('form-test/javascript-states-form');
     $driver = $this->getSession()->getDriver();
 
-    $this->assertElementNotVisible('#edit-name', 'Name field is not visible.');
+    $this->assertElementNotVisible('#edit-name');
 
     // This should make the name element visible.
     $this->click('#edit-anonymous');
-    $this->assertElementVisible('#edit-name', 'Name field is not visible.');
+    $this->assertElementVisible('#edit-name');
 
     // This should make the name element invisible.
     $this->click('#edit-anonymous');
-    $this->assertElementNotVisible('#edit-name', 'Name field is not visible.');
+    $this->assertElementNotVisible('#edit-name');
 
     // This should make the name element visible.
     $this->click('#edit-anonymous');
-    $this->assertElementVisible('#edit-name', 'Name field is visible.');
+    $this->assertElementVisible('#edit-name');
 
     // Ensure all the details elements are invisible.
     $this->assertElementNotVisible('#edit-high-school');
diff --git a/core/tests/Drupal/FunctionalJavascriptTests/JavascriptTestBase.php b/core/tests/Drupal/FunctionalJavascriptTests/JavascriptTestBase.php
index ab1c79d..2f4cab5 100644
--- a/core/tests/Drupal/FunctionalJavascriptTests/JavascriptTestBase.php
+++ b/core/tests/Drupal/FunctionalJavascriptTests/JavascriptTestBase.php
@@ -48,6 +48,7 @@ protected function initMink() {
    *   Optional message to show alongside the assertion.
    */
   protected function assertElementVisible($css_selector, $message = '') {
+    $message = $message ?: "Element ($css_selector) is visible.";
     $this->assertTrue($this->getSession()->getDriver()->isVisible(CssSelector::toXPath($css_selector)), $message);
   }
 
@@ -60,6 +61,7 @@ protected function assertElementVisible($css_selector, $message = '') {
    *   Optional message to show alongside the assertion.
    */
   protected function assertElementNotVisible($css_selector, $message = '') {
+    $message = $message ?: "Element ($css_selector) is not visible.";
     $this->assertFalse($this->getSession()->getDriver()->isVisible(CssSelector::toXPath($css_selector)), $message);
   }