diff --git a/src/api/endpoints/class-tainacan-rest-collections-controller.php b/src/api/endpoints/class-tainacan-rest-collections-controller.php
index f8883d683..fd69223de 100644
--- a/src/api/endpoints/class-tainacan-rest-collections-controller.php
+++ b/src/api/endpoints/class-tainacan-rest-collections-controller.php
@@ -19,10 +19,17 @@ class TAINACAN_REST_Collections_Controller extends WP_REST_Controller {
 	public function __construct(){
         $this->namespace = 'tainacan/v2';
         $this->rest_base = 'collections';
-        $this->collections_repository = new Repositories\Collections();
-        $this->collection = new Entities\Collection();
 
         add_action('rest_api_init', array($this, 'register_routes'));
+        add_action('init', array(&$this, 'init_objects'), 11);
+    }
+    
+    /**
+     * Initialize objects after post_type register
+     */
+    public function init_objects() {
+    	$this->collections_repository = new Repositories\Collections();
+    	$this->collection = new Entities\Collection();
     }
 
 	/**
diff --git a/src/api/endpoints/class-tainacan-rest-filters-controller.php b/src/api/endpoints/class-tainacan-rest-filters-controller.php
index 56bf27ebc..38cfacc0e 100644
--- a/src/api/endpoints/class-tainacan-rest-filters-controller.php
+++ b/src/api/endpoints/class-tainacan-rest-filters-controller.php
@@ -20,16 +20,22 @@ class TAINACAN_REST_Filters_Controller extends WP_REST_Controller {
 		$this->namespace = '/tainacan/v2';
 		$this->rest_base = 'filters';
 
+		add_action('rest_api_init', array($this, 'register_routes'));
+		add_action('init', array(&$this, 'init_objects'), 11);
+	}
+	
+	/**
+	 * Initialize objects after post_type register
+	 */
+	public function init_objects() {
 		$this->collection = new Entities\Collection();
 		$this->collection_repository = new Repositories\Collections();
-
+		
 		$this->metadata = new Entities\Metadata();
 		$this->metadata_repository = new Repositories\Metadatas();
-
+		
 		$this->filter = new Entities\Filter();
 		$this->filter_repository = new Repositories\Filters();
-
-		add_action('rest_api_init', array($this, 'register_routes'));
 	}
 
 	public function register_routes() {
diff --git a/src/api/endpoints/class-tainacan-rest-items-controller.php b/src/api/endpoints/class-tainacan-rest-items-controller.php
index fa40cbb4a..22ec10b19 100644
--- a/src/api/endpoints/class-tainacan-rest-items-controller.php
+++ b/src/api/endpoints/class-tainacan-rest-items-controller.php
@@ -21,12 +21,19 @@ class TAINACAN_REST_Items_Controller extends WP_REST_Controller {
 	public function __construct() {
 		$this->namespace = 'tainacan/v2';
 		$this->rest_base = 'items';
+		
+		add_action('rest_api_init', array($this, 'register_routes'));
+		add_action('init', array(&$this, 'init_objects'), 11);
+	}
+	
+	/**
+	 * Initialize objects after post_type register
+	 */
+	public function init_objects() {
 		$this->items_repository = new Repositories\Items();
 		$this->item = new Entities\Item();
 		$this->item_metadata = new Repositories\Item_Metadata();
 		$this->collections_repository = new Repositories\Collections();
-
-		add_action('rest_api_init', array($this, 'register_routes'));
 	}
 
 	/**
diff --git a/src/api/endpoints/class-tainacan-rest-metadata-controller.php b/src/api/endpoints/class-tainacan-rest-metadata-controller.php
index e0263e7e6..5f3af2672 100644
--- a/src/api/endpoints/class-tainacan-rest-metadata-controller.php
+++ b/src/api/endpoints/class-tainacan-rest-metadata-controller.php
@@ -14,16 +14,21 @@ class TAINACAN_REST_Metadata_Controller extends WP_REST_Controller {
 		$this->namespace = 'tainacan/v2';
 		$this->rest_base = 'metadata';
 
+		add_action('rest_api_init', array($this, 'register_routes'));
+		add_action('init', array(&$this, 'init_objects'), 11);
+	}
+
+	/**
+	 * Initialize objects after post_type register
+	 */
+	public function init_objects() {
 		$this->metadata = new Entities\Metadata();
 		$this->metadata_repository = new Repositories\Metadatas();
 		$this->item_metadata_repository = new Repositories\Item_Metadata();
 		$this->item_repository = new Repositories\Items();
 		$this->collection_repository = new Repositories\Collections();
-
-		add_action('rest_api_init', array($this, 'register_routes'));
 	}
 
-
 	/**
 	 * If POST on metadata/collection/<collection_id>, then
 	 * a metadata will be created in matched collection and all your item will receive this metadata
diff --git a/src/api/endpoints/class-tainacan-rest-taxonomies-controller.php b/src/api/endpoints/class-tainacan-rest-taxonomies-controller.php
index 240f1a67b..00ae74f5a 100644
--- a/src/api/endpoints/class-tainacan-rest-taxonomies-controller.php
+++ b/src/api/endpoints/class-tainacan-rest-taxonomies-controller.php
@@ -3,7 +3,7 @@
 use Tainacan\Entities;
 use Tainacan\Repositories;
 
-class TAINACAN_REST_Taxonomies_Controller extends WP_REST_Controller {
+class TAINACAN_REST_Taxonomies_Controller extends \WP_REST_Controller {
 	private $taxonomy;
 	private $taxonomy_repository;
 
@@ -14,10 +14,16 @@ class TAINACAN_REST_Taxonomies_Controller extends WP_REST_Controller {
 		$this->namespace = 'tainacan/v2';
 		$this->rest_base = 'taxonomies';
 
+		add_action('rest_api_init', array($this, 'register_routes'));
+		add_action('init', array(&$this, 'init_objects'), 11);
+	}
+	
+	/**
+	 * Initialize objects after post_type register
+	 */
+	public function init_objects() {
 		$this->taxonomy = new Entities\Taxonomy();
 		$this->taxonomy_repository = new Repositories\Taxonomies();
-
-		add_action('rest_api_init', array($this, 'register_routes'));
 	}
 
 	public function register_routes() {
diff --git a/src/api/endpoints/class-tainacan-rest-terms-controller.php b/src/api/endpoints/class-tainacan-rest-terms-controller.php
index e7edfc1bd..a3248122c 100644
--- a/src/api/endpoints/class-tainacan-rest-terms-controller.php
+++ b/src/api/endpoints/class-tainacan-rest-terms-controller.php
@@ -16,12 +16,18 @@ class TAINACAN_REST_Terms_Controller extends WP_REST_Controller {
 		$this->namespace = 'tainacan/v2';
 		$this->rest_base = 'terms';
 
+		add_action('rest_api_init', array($this, 'register_routes'));
+		add_action('init', array(&$this, 'init_objects'), 11);
+	}
+	
+	/**
+	 * Initialize objects after post_type register
+	 */
+	public function init_objects() {
 		$this->term = new Entities\Term();
 		$this->terms_repository = new Repositories\Terms();
 		$this->taxonomy = new Entities\Taxonomy();
 		$this->taxonomy_repository = new Repositories\Taxonomies();
-
-		add_action('rest_api_init', array($this, 'register_routes'));
 	}
 
 	public function register_routes() {