diff -u b/auto_entitylabel.module b/auto_entitylabel.module
--- b/auto_entitylabel.module
+++ b/auto_entitylabel.module
@@ -17,9 +17,25 @@
  * Adds the Auto Label tab to the entity configuration page.
  */
 function auto_entitylabel_entity_type_alter(array &$entity_types) {
+  $module_handler = \Drupal::moduleHandler();
   /** @var $entity_types \Drupal\Core\Entity\EntityTypeInterface[] */
   foreach ($entity_types as $entity_type_id => $entity_type) {
-    if ($entity_type instanceof ConfigEntityType && $entity_type->hasLinkTemplate('edit-form') && $entity_type->getProvider() != 'page_manager') {
+    // Support core entity types only. Contrib and custom entity types should
+    // use a hook or service (@todo https://www.drupal.org/node/2829571).
+    $core_entity = FALSE;
+    $module_name = $entity_type->getProvider();
+    if ($module_name != 'core') {
+      // Identify core entity types that are provided by modules.
+      $module = $module_handler->getModule($module_name);
+      if (preg_match('/^core/', $module->getPath())){
+        $core_entity = TRUE;
+      }
+    }
+    else {
+      // Some core entity types are not provided by a module.
+      $core_entity = TRUE;
+    }
+    if ($core_entity && $entity_type instanceof ConfigEntityType && $entity_type->hasLinkTemplate('edit-form')) {
       $entity_type->setLinkTemplate('auto-label', $entity_type->getLinkTemplate('edit-form') . "/auto-label");
     }
   }
@@ -108,12 +124,11 @@
   $entity_type = $entity->getEntityType();
   $entity_type_id = $entity_type->id();
   $entity_id = $entity->id();
-  if ($entity_type instanceof ConfigEntityType &&
-    $entity->hasLinkTemplate('auto-label') &&
+  if ($entity->hasLinkTemplate('auto-label') &&
     \Drupal::currentUser()->hasPermission('administer ' . $entity_type_id . ' labels')) {
 
     $operations['auto-label'] = array(
-      'title' => t('Automatic entity label'),
+      'title' => t('Manage automatic entity labels'),
       'weight' => 100,
       'url' => Url::fromRoute("entity.{$entity_type_id}.auto_label", array($entity_type_id => $entity_id)),
     );
diff -u b/src/AutoEntityLabelPermissionController.php b/src/AutoEntityLabelPermissionController.php
--- b/src/AutoEntityLabelPermissionController.php
+++ b/src/AutoEntityLabelPermissionController.php
@@ -55,14 +55,14 @@
     foreach ($this->entityManager->getDefinitions() as $entity_type_id => $entity_type) {
       // Create a permission for each entity type to manage the entity
       // labels.
-      if ($entity_type->hasLinkTemplate('auto-label') && $entity_type->hasKey('label') && $entity_type instanceof ConfigEntityType) {
+      if ($entity_type->hasLinkTemplate('auto-label') && $entity_type->hasKey('label')) {
         $permissions['administer ' . $entity_type_id . ' labels'] = [
           'title' => $this->t('%entity_label: Administer automatic entity labels', ['%entity_label' => $entity_type->getLabel()]),
           'restrict access' => TRUE,
         ];
       }
     }
-    // Permission to use PHP in entity label patterns
+    // Create permission to use PHP in entity label patterns.
     $permissions['use PHP for auto entity labels'] = [
       'title' => $this->t('Use PHP for automatic entity label patterns'),
       'restrict access' => TRUE,