diff --git a/includes/class-admin.php b/includes/class-admin.php
index 9cacdd7..8c39061 100644
--- a/includes/class-admin.php
+++ b/includes/class-admin.php
@@ -100,6 +100,6 @@ class Admin {
 		?>
 		<h2><?php esc_html_e( 'Fediverse', 'activitypub' ); ?></h2>
 		<?php
-		activitypub_get_identifier_settings( $user->ID );
+		\Activitypub\get_identifier_settings( $user->ID );
 	}
 }
diff --git a/includes/functions.php b/includes/functions.php
index a6aef96..c6e362d 100644
--- a/includes/functions.php
+++ b/includes/functions.php
@@ -134,7 +134,7 @@ function get_remote_metadata_by_actor( $actor ) {
  * @return [type]        [description]
  */
 function get_inbox_by_actor( $actor ) {
-	$metadata = get_remote_metadata_by_actor( $actor );
+	$metadata = \Activitypub\get_remote_metadata_by_actor( $actor );
 
 	if ( is_wp_error( $metadata ) ) {
 		return $metadata;
@@ -157,7 +157,7 @@ function get_inbox_by_actor( $actor ) {
  * @return [type]        [description]
  */
 function get_publickey_by_actor( $actor, $key_id ) {
-	$metadata = get_remote_metadata_by_actor( $actor );
+	$metadata = \Activitypub\get_remote_metadata_by_actor( $actor );
 
 	if ( is_wp_error( $metadata ) ) {
 		return $metadata;
diff --git a/includes/rest/class-followers.php b/includes/rest/class-followers.php
index 4f673e9..b7fdb97 100644
--- a/includes/rest/class-followers.php
+++ b/includes/rest/class-followers.php
@@ -43,7 +43,7 @@ class Followers {
 
 		$json = new \stdClass();
 
-		$json->{'@context'} = get_activitypub_context();
+		$json->{'@context'} = \Activitypub\get_context();
 
 		$followers = \Activitypub\Db\Followers::get_followers( $user_id );