diff --git a/src/ContentLock/ContentLock.php b/src/ContentLock/ContentLock.php
index 4dc6709..6a4938e 100644
--- a/src/ContentLock/ContentLock.php
+++ b/src/ContentLock/ContentLock.php
@@ -600,7 +600,7 @@ class ContentLock extends ServiceProviderBase {
    *   it should be locked on entity level.
    */
   public function isTranslationLockEnabled($entity_type_id) {
-    return in_array($entity_type_id, $this->configFactory->get('content_lock.settings')->get("types_translation_lock"));
+    return $this->moduleHandler->moduleExists('conflict') && in_array($entity_type_id, $this->configFactory->get('content_lock.settings')->get("types_translation_lock"));
   }
 
 }
diff --git a/src/Form/ContentLockSettingsForm.php b/src/Form/ContentLockSettingsForm.php
index ae2288c..2a07e50 100644
--- a/src/Form/ContentLockSettingsForm.php
+++ b/src/Form/ContentLockSettingsForm.php
@@ -3,9 +3,11 @@
 namespace Drupal\content_lock\Form;
 
 use Drupal\Core\Entity\ContentEntityTypeInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
 use Drupal\Core\Form\ConfigFormBase;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Url;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Drupal\Core\Entity\EntityTypeManager;
 
@@ -24,11 +26,19 @@ class ContentLockSettingsForm extends ConfigFormBase {
   protected $entityTypeManager;
 
   /**
+   * Drupal\Core\Extension\ModuleHandlerInterface module handler.
+   *
+   * @var \Drupal\Core\Extension\ModuleHandlerInterface
+   */
+  protected $moduleHandler;
+
+  /**
    * {@inheritdoc}
    */
-  public function __construct(ConfigFactoryInterface $config_factory, EntityTypeManager $entityTypeManager) {
+  public function __construct(ConfigFactoryInterface $config_factory, EntityTypeManager $entityTypeManager, ModuleHandlerInterface $module_handler) {
     parent::__construct($config_factory);
     $this->entityTypeManager = $entityTypeManager;
+    $this->moduleHandler = $module_handler;
   }
 
   /**
@@ -37,7 +47,8 @@ class ContentLockSettingsForm extends ConfigFormBase {
   public static function create(ContainerInterface $container) {
     return new static(
       $container->get('config.factory'),
-      $container->get('entity_type.manager')
+      $container->get('entity_type.manager'),
+      $container->get('module_handler')
     );
   }
 
@@ -115,6 +126,17 @@ class ContentLockSettingsForm extends ConfigFormBase {
           '#default_value' => in_array($definition->id(), $config->get('types_translation_lock')),
           '#description' => $this->t('Activating this options allows users to edit multiple translations concurrently')
         ];
+        if (!$this->moduleHandler->moduleExists('conflict')) {
+          $form['entities'][$definition->id()]['translation_lock'] = [
+              '#disabled' => TRUE,
+              '#default_value' => FALSE,
+              '#description' => $this->t('To allow editing multiple translations concurrently you need to install %module',
+                [
+                  '%module' => $this->getLinkGenerator()->generate('Conflict', Url::fromUri('https://www.drupal.org/project/conflict'))
+                ]
+              ),
+          ] + $form['entities'][$definition->id()]['translation_lock'];
+        }
       }
     }