diff --git a/README.md b/README.md
index 61f7cf8..771e737 100755
--- a/README.md
+++ b/README.md
@@ -83,3 +83,9 @@ MAINTAINERS
 Supporting organizations:
 
  * Chuva Inc. - https://www.drupal.org/chuva-inc
+
+DEVELOPMENT
+-------------
+  You can disable captcha in your local or test environment by adding the
+  following line to settings.php:
+  $settings['disable_captcha'] = TRUE;
diff --git a/captcha.module b/captcha.module
index ce37c3f..4fcd204 100755
--- a/captcha.module
+++ b/captcha.module
@@ -18,6 +18,7 @@ use Drupal\Core\Render\Element;
 use Drupal\Core\Render\Markup;
 use Drupal\Core\Routing\RouteMatchInterface;
 use Drupal\Core\Url;
+use Drupal\Core\Site\Settings;
 
 /**
  * Constants for CAPTCHA persistence.
@@ -287,6 +288,22 @@ function captcha_form_alter(array &$form, FormStateInterface $form_state, $form_
       '#markup' => '<div class="messages messages--warning">' . t('Most CAPTCHA methods will disable the caching of pages that contain a CAPTCHA element. Check the different implementations to know more about how it affects caching.') . '</div>',
     ];
   }
+
+  // Disable captcha if override is set.
+  if (Settings::get('disable_captcha', FALSE) === TRUE) {
+    $override_notice = [
+      '#type' => 'html_tag',
+      '#tag' => 'strong',
+      '#value' => t('Captcha override is activated.'),
+    ];
+    if (isset($form['elements']['captcha'])) {
+      $form['elements']['captcha'] = $override_notice;
+    }
+    if (isset($form['captcha'])) {
+      $form['captcha'] = $override_notice;
+    }
+  }
+
 }
 
 /**