diff --git a/includes/class-activity-dispatcher.php b/includes/class-activity-dispatcher.php
index 617162d..cc78b2d 100644
--- a/includes/class-activity-dispatcher.php
+++ b/includes/class-activity-dispatcher.php
@@ -65,7 +65,7 @@ class Activity_Dispatcher {
 			return;
 		}
 
-		$transformer = \Activitypub\Transformer\Transformers_Manager::instance()->get_transformer( $wp_post );
+		$transformer = Transformers_Manager::instance()->get_transformer( $wp_post );
 		$object = $transformer->to_object();
 
 		$activity = new Activity();
@@ -102,7 +102,7 @@ class Activity_Dispatcher {
 			return;
 		}
 
-		$transformer = \Activitypub\Transformer\Transformers_Manager::instance()->get_transformer( $wp_post );
+		$transformer = Transformers_Manager::instance()->get_transformer( $wp_post );
 		$object = $transformer->to_object();
 
 		$activity = new Activity();
diff --git a/includes/model/class-post.php b/includes/model/class-post.php
index 6aeea14..72f95d4 100644
--- a/includes/model/class-post.php
+++ b/includes/model/class-post.php
@@ -33,8 +33,9 @@ class Post {
 	public function __construct( $post, $post_author = null ) {
 		_deprecated_function( __CLASS__, '1.0.0', '\Activitypub\Transformer\Post' );
 
-		$this->post   = $post;
-		$this->object = Transformer_Post->set_wp_post( $post )->to_object();
+		$this->post = $post;
+		$transformer = new Transformer_Post();
+		$this->object = $transformer->set_wp_post( $post )->to_object();
 	}
 
 	/**
diff --git a/includes/transformer/class-transformers-manager.php b/includes/transformer/class-transformers-manager.php
index f714890..cb0f701 100644
--- a/includes/transformer/class-transformers-manager.php
+++ b/includes/transformer/class-transformers-manager.php
@@ -284,7 +284,8 @@ class Transformers_Manager {
 				$post_type = get_post_type( $object );
 				$transformer_mapping = \get_option( 'activitypub_transformer_mapping', self::DEFAULT_TRANSFORMER_MAPPING );
 				$transformer_name = $transformer_mapping[ $post_type ];
-				$transformer_instance = new ( $this->get_transformers( $transformer_name ) );
+				$transformer_class = $this->get_transformers( $transformer_name );
+				$transformer_instance = new $transformer_class();
 				$transformer_instance->set_wp_post( $object );
 				return $transformer_instance;
 			case 'WP_Comment':