diff --git a/src/Worker/FetchPoCo.php b/src/Worker/FetchPoCo.php
index 372bd3733..67f2e548b 100644
--- a/src/Worker/FetchPoCo.php
+++ b/src/Worker/FetchPoCo.php
@@ -9,7 +9,14 @@ use Friendica\Protocol\PortableContact;
 
 class FetchPoCo
 {
-	// Load POCO data from a given POCO address
+	/**
+	 * Fetch PortableContacts from a given PoCo server address
+	 *
+	 * @param integer $cid  Contact ID
+	 * @param integer $uid  User ID
+	 * @param integer $zcid Global Contact ID
+	 * @param integer $url  PoCo address that should be polled
+	 */
 	public static function execute($cid, $uid, $zcid, $url)
 	{
 		PortableContact::load($cid, $uid, $zcid, $url);
diff --git a/src/Worker/UpdateContact.php b/src/Worker/UpdateContact.php
index f23c5c0a0..0e5fd1412 100644
--- a/src/Worker/UpdateContact.php
+++ b/src/Worker/UpdateContact.php
@@ -13,6 +13,11 @@ use Friendica\Database\DBA;
 
 class UpdateContact
 {
+	/**
+	 * Update contact data via probe
+	 * @param int    $contact_id Contact ID
+	 * @param string $command
+	 */
 	public static function execute($contact_id, $command = '')
 	{
 		$force = ($command == "force");
diff --git a/src/Worker/UpdateGContact.php b/src/Worker/UpdateGContact.php
index aacebcb80..1057d0a27 100644
--- a/src/Worker/UpdateGContact.php
+++ b/src/Worker/UpdateGContact.php
@@ -12,6 +12,11 @@ use Friendica\Database\DBA;
 
 class UpdateGContact
 {
+	/**
+	 * Update global contact via probe
+	 * @param string $url     Global contact url
+	 * @param string $command
+	 */
 	public static function execute($url, $command = '')
 	{
 		$force = ($command == "force");
diff --git a/src/Worker/UpdateGContacts.php b/src/Worker/UpdateGContacts.php
index 64ffb2a50..1d9d86bcf 100644
--- a/src/Worker/UpdateGContacts.php
+++ b/src/Worker/UpdateGContacts.php
@@ -16,22 +16,24 @@ use Friendica\Util\Strings;
 
 class UpdateGContacts
 {
-	// Updates gcontact entries
+	/**
+	 * Updates global contacts
+	 */
 	public static function execute()
 	{
 		if (!Config::get('system', 'poco_completion')) {
 			return;
 		}
 
-		Logger::info('Discover contacts');
+		Logger::info('Update global contacts');
 
 		$starttime = time();
 
 		$contacts = DBA::p("SELECT `url`, `created`, `updated`, `last_failure`, `last_contact`, `server_url`, `network` FROM `gcontact`
 				WHERE `last_contact` < UTC_TIMESTAMP - INTERVAL 1 MONTH AND
 					`last_failure` < UTC_TIMESTAMP - INTERVAL 1 MONTH AND
-					`network` IN (?, ?, ?, ?, '') ORDER BY rand()",
-				Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, Protocol::FEED);
+					`network` IN (?, ?, ?, ?, ?, '') ORDER BY rand()",
+				Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, Protocol::FEED);
 
 		$checked = 0;
 
diff --git a/src/Worker/UpdateGServer.php b/src/Worker/UpdateGServer.php
index 2e017422f..b94c5343a 100644
--- a/src/Worker/UpdateGServer.php
+++ b/src/Worker/UpdateGServer.php
@@ -10,7 +10,10 @@ use Friendica\Util\Strings;
 
 class UpdateGServer
 {
-	// Searches for the poco server list.
+	/**
+	 * Update the given server
+	 * @param string $server_url Server URL
+	 */
 	public static function execute($server_url)
 	{
 		if (empty($server_url)) {
diff --git a/src/Worker/UpdateGServers.php b/src/Worker/UpdateGServers.php
index a245c34fc..d55d8df01 100644
--- a/src/Worker/UpdateGServers.php
+++ b/src/Worker/UpdateGServers.php
@@ -12,8 +12,7 @@ use Friendica\Model\GServer;
 class UpdateGServers
 {
 	/**
-	 * @brief Updates the first 250 servers
-	 *
+	 * Updates the first 250 servers
 	 */
 	public static function execute()
 	{
diff --git a/src/Worker/UpdateServerDirectories.php b/src/Worker/UpdateServerDirectories.php
index e1b12034a..433685cb2 100644
--- a/src/Worker/UpdateServerDirectories.php
+++ b/src/Worker/UpdateServerDirectories.php
@@ -11,6 +11,9 @@ use Friendica\Protocol\PortableContact;
 
 class UpdateServerDirectories
 {
+	/**
+	 * Query global servers for their users
+	 */
 	public static function execute()
 	{
 		if (Config::get('system', 'poco_discovery') == PortableContact::DISABLED) {
diff --git a/src/Worker/UpdateServerDirectory.php b/src/Worker/UpdateServerDirectory.php
index 262da2d30..fd5ee0534 100644
--- a/src/Worker/UpdateServerDirectory.php
+++ b/src/Worker/UpdateServerDirectory.php
@@ -9,6 +9,10 @@ use Friendica\Model\GServer;
 
 class UpdateServerDirectory
 {
+	/**
+	 * Query the given server for their users
+	 * @param string $gserver Server URL
+	 */
 	public static function execute($gserver)
 	{
 		GServer::updateDirectory($gserver);
diff --git a/src/Worker/UpdateSuggestions.php b/src/Worker/UpdateSuggestions.php
index 222244c1c..7d4543409 100644
--- a/src/Worker/UpdateSuggestions.php
+++ b/src/Worker/UpdateSuggestions.php
@@ -9,7 +9,9 @@ use Friendica\Model\GContact;
 
 class UpdateSuggestions
 {
-	// Discover other servers for their contacts.
+	/**
+	 * Discover other servers for their contacts.
+	 */
 	public static function execute()
 	{
 		GContact::updateSuggestions();