diff --git a/README.md b/README.md
index b32fc10..4e479a8 100644
--- a/README.md
+++ b/README.md
@@ -3,8 +3,8 @@
 **Donate link:** https://notiz.blog/donate/  
 **Tags:** OStatus, fediverse, activitypub, activitystream  
 **Requires at least:** 4.7  
-**Tested up to:** 5.1.0  
-**Stable tag:** 0.4.0  
+**Tested up to:** 5.1  
+**Stable tag:** 0.4.1  
 **Requires PHP:** 5.6  
 **License:** MIT  
 **License URI:** http://opensource.org/licenses/MIT  
@@ -55,6 +55,10 @@ To implement:
 
 Project maintained on github at [pfefferle/wordpress-activitypub](https://github.com/pfefferle/wordpress-activitypub).
 
+### 0.4.1 ###
+
+* finally fixed contact list
+
 ### 0.4.0 ###
 
 * added settings to enable/disable hashtag support
diff --git a/activitypub.php b/activitypub.php
index aef4845..44a397a 100644
--- a/activitypub.php
+++ b/activitypub.php
@@ -3,7 +3,7 @@
  * Plugin Name: ActivityPub
  * Plugin URI: https://github.com/pfefferle/wordpress-activitypub/
  * Description: The ActivityPub protocol is a decentralized social networking protocol based upon the ActivityStreams 2.0 data format.
- * Version: 0.4.0
+ * Version: 0.4.1
  * Author: Matthias Pfefferle
  * Author URI: https://notiz.blog/
  * License: MIT
diff --git a/bin/deploy.sh b/bin/deploy.sh
old mode 100644
new mode 100755
diff --git a/bin/install-wp-tests.sh b/bin/install-wp-tests.sh
old mode 100644
new mode 100755
diff --git a/composer.json b/composer.json
index 83ded6f..52f99d8 100644
--- a/composer.json
+++ b/composer.json
@@ -6,6 +6,9 @@
         "php": ">=5.3.0",
         "composer/installers": "~1.0"
     },
+    "require-dev": {
+        "phpunit/phpunit": "^5.5"
+    },
     "license": "MIT",
     "authors": [
         {
diff --git a/includes/class-db-activitypub-followers.php b/includes/class-db-activitypub-followers.php
index 5b163f9..b6e9c18 100644
--- a/includes/class-db-activitypub-followers.php
+++ b/includes/class-db-activitypub-followers.php
@@ -9,20 +9,15 @@ class Db_Activitypub_Followers {
 			return $followers;
 		}
 
-		if ( count( $array ) == count( $array, COUNT_RECURSIVE ) ) {
-			return $followers;
-		}
-
 		foreach ( $followers as $key => $follower ) {
 			if (
 				is_array( $follower ) &&
 				isset( $follower['type'] ) &&
 				'Person' === $follower['type'] &&
 				isset( $follower['id'] ) &&
-				true === filter_var( $follower['id'], FILTER_VALIDATE_URL )
+				false !== filter_var( $follower['id'], FILTER_VALIDATE_URL )
 			) {
-				unset( $followers[$key] );
-				$followers[] = $follower['id'];
+				$followers[$key] = $follower['id'];
 			}
 		}
 
@@ -38,7 +33,7 @@ class Db_Activitypub_Followers {
 				isset( $actor['type'] ) &&
 				'Person' === $actor['type'] &&
 				isset( $actor['id'] ) &&
-				true === filter_var( $actor['id'], FILTER_VALIDATE_URL )
+				false !== filter_var( $actor['id'], FILTER_VALIDATE_URL )
 			) {
 				$actor = $actor['id'];
 			}
diff --git a/languages/activitypub.pot b/languages/activitypub.pot
index 6a51f19..d1c7ae0 100644
--- a/languages/activitypub.pot
+++ b/languages/activitypub.pot
@@ -2,9 +2,9 @@
 # This file is distributed under the MIT.
 msgid ""
 msgstr ""
-"Project-Id-Version: ActivityPub 0.4.0\n"
+"Project-Id-Version: ActivityPub 0.4.1\n"
 "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/activitypub\n"
-"POT-Creation-Date: 2019-02-17 20:46:19+00:00\n"
+"POT-Creation-Date: 2019-02-19 13:29:42+00:00\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
@@ -66,7 +66,7 @@ msgstr ""
 msgid "Fediverse"
 msgstr ""
 
-#: includes/class-db-activitypub-followers.php:46
+#: includes/class-db-activitypub-followers.php:41
 msgid "Unknown Actor schema"
 msgstr ""
 
diff --git a/readme.txt b/readme.txt
index 645547e..878477f 100644
--- a/readme.txt
+++ b/readme.txt
@@ -3,8 +3,8 @@ Contributors: pfefferle
 Donate link: https://notiz.blog/donate/
 Tags: OStatus, fediverse, activitypub, activitystream
 Requires at least: 4.7
-Tested up to: 5.1.0
-Stable tag: 0.4.0
+Tested up to: 5.1
+Stable tag: 0.4.1
 Requires PHP: 5.6
 License: MIT
 License URI: http://opensource.org/licenses/MIT
@@ -55,6 +55,10 @@ To implement:
 
 Project maintained on github at [pfefferle/wordpress-activitypub](https://github.com/pfefferle/wordpress-activitypub).
 
+= 0.4.1 =
+
+* finally fixed contact list
+
 = 0.4.0 =
 
 * added settings to enable/disable hashtag support
diff --git a/tests/test-class-db-activitypub-followers.php b/tests/test-class-db-activitypub-followers.php
new file mode 100644
index 0000000..61f0f3d
--- /dev/null
+++ b/tests/test-class-db-activitypub-followers.php
@@ -0,0 +1,18 @@
+<?php
+class Test_Db_Activitypub_Followers extends WP_UnitTestCase {
+	public function test_get_followers() {
+		$followers = array( 'https://example.com/author/jon', 'https://example.org/author/doe' );
+		$followers[] = array(
+			'type' => 'Person',
+			'id' => 'http://sally.example.org',
+			'name' => 'Sally Smith',
+		);
+		update_user_meta( 1, 'activitypub_followers', $followers );
+
+		$db_followers = Db_Activitypub_Followers::get_followers( 1 );
+
+		$this->assertEquals( 3, count( $db_followers ) );
+
+		$this->assertSame( array( 'https://example.com/author/jon', 'https://example.org/author/doe', 'http://sally.example.org' ), $db_followers );
+	}
+}
diff --git a/tests/test.php b/tests/test.php
deleted file mode 100644
index 0293fbc..0000000
--- a/tests/test.php
+++ /dev/null
@@ -1,6 +0,0 @@
-<?php
-class Test extends WP_UnitTestCase {
-	public function test() {
-		$this->assertTrue( true );
-	}
-}