diff --git a/application/forms/IcingaServiceForm.php b/application/forms/IcingaServiceForm.php
index 5744d8d36..6c02e3e49 100644
--- a/application/forms/IcingaServiceForm.php
+++ b/application/forms/IcingaServiceForm.php
@@ -9,6 +9,7 @@
 use Icinga\Module\Director\Auth\Permission;
 use Icinga\Module\Director\Data\PropertiesFilter\ArrayCustomVariablesFilter;
 use Icinga\Module\Director\Exception\NestingError;
+use Icinga\Module\Director\Objects\DirectorActivityLog;
 use Icinga\Module\Director\Objects\IcingaObject;
 use Icinga\Module\Director\Web\Form\DirectorObjectForm;
 use Icinga\Module\Director\Objects\IcingaHost;
@@ -286,6 +287,9 @@ protected function blacklist()
             'host_id'    => $host->get('id'),
             'service_id' => $service->get('id')
         ])) {
+            $host->vars()->set('blacklisted_service', $service->getObjectName());
+            DirectorActivityLog::logServiceBlacklist($host, $this->getDb());
+
             $msg = sprintf(
                 $this->translate('%s has been deactivated on %s'),
                 $service->getObjectName(),
@@ -327,6 +331,9 @@ protected function removeFromBlacklist()
                 $service->getObjectName(),
                 $host->getObjectName()
             );
+
+            $host->vars()->set('blacklisted_service', $service->getObjectName());
+            DirectorActivityLog::logServiceBlacklist($host, $this->getDb(), false);
             $this->redirectOnSuccess($msg);
         }
     }
diff --git a/library/Director/Objects/DirectorActivityLog.php b/library/Director/Objects/DirectorActivityLog.php
index 2cecc2eec..1f87d4a6f 100644
--- a/library/Director/Objects/DirectorActivityLog.php
+++ b/library/Director/Objects/DirectorActivityLog.php
@@ -173,6 +173,44 @@ public static function logModification(IcingaObject $object, Db $db)
         return static::create($data)->store($db);
     }
 
+    public static function logServiceBlacklist(IcingaHost $host, Db $db, bool $blacklist = true)
+    {
+        $name = $host->getObjectName();
+        $type = $host->getTableName();
+
+        if ($blacklist) {
+            $oldProps = json_encode($host->getPlainUnmodifiedObject());
+            $newProps = $host->toJson(null, true);
+        } else {
+            $oldProps = $host->toJson(null, true);
+            $newProps = json_encode($host->getPlainUnmodifiedObject());
+        }
+
+        $data = [
+            'object_name'           => $name,
+            'action_name'           => self::ACTION_MODIFY,
+            'author'                => static::username(),
+            'object_type'           => $type,
+            'old_properties'        => $oldProps,
+            'new_properties'        => $newProps,
+            'change_time'           => date('Y-m-d H:i:s'),
+            'parent_checksum'       => $db->getLastActivityChecksum()
+        ];
+
+        $data['checksum'] = sha1(json_encode($data), true);
+        $data['parent_checksum'] = hex2bin($data['parent_checksum']);
+
+        static::audit($db, [
+            'action'      => self::ACTION_MODIFY,
+            'object_type' => $type,
+            'object_name' => $name,
+            'old_props'   => $oldProps,
+            'new_props'   => $newProps
+        ]);
+
+        return static::create($data)->store($db);
+    }
+
     public static function logRemoval(IcingaObject $object, Db $db)
     {
         $name = $object->getObjectName();
diff --git a/library/Director/Web/Widget/ActivityLogInfo.php b/library/Director/Web/Widget/ActivityLogInfo.php
index 2b64fd42b..c532e22aa 100644
--- a/library/Director/Web/Widget/ActivityLogInfo.php
+++ b/library/Director/Web/Widget/ActivityLogInfo.php
@@ -24,6 +24,7 @@
 use gipfl\IcingaWeb2\Url;
 use gipfl\IcingaWeb2\Widget\NameValueTable;
 use gipfl\IcingaWeb2\Widget\Tabs;
+use ipl\Html\Text;
 
 class ActivityLogInfo extends HtmlDocument
 {
@@ -126,6 +127,26 @@ public function showTab($tabName)
 
         $this->getTabs()->activate($tabName);
         $this->add($this->getInfoTable());
+
+        if ($this->entry->object_type === 'icinga_host') {
+            $newBlacklistedService = $this->newObject()->vars()->get('blacklisted_service');
+            $oldBlackListedService = $this->oldObject()->vars()->get('blacklisted_service');
+            $action = $newBlacklistedService !== null ? 'deactivated' : 'reactivated';
+
+            if ($newBlacklistedService || $oldBlackListedService) {
+                $this->addHtml(
+                    new HtmlElement('div', null, new Text(sprintf(
+                        'Service %s has been %s on host %s',
+                        $newBlacklistedService ?? $oldBlackListedService,
+                        $action,
+                        $this->newObject()->getObjectName()
+                    )))
+                );
+
+                return $this;
+            }
+        }
+
         if ($tabName === 'old') {
             // $title = sprintf('%s former config', $this->entry->object_name);
             $diffs = IcingaConfigDiff::getDiffs($this->oldConfig(), $this->emptyConfig());
@@ -571,7 +592,14 @@ public function getInfoTable()
             $this->translate('Checksum'),
             $entry->checksum
         );
-        if ($this->entry->old_properties) {
+
+        if (
+            $this->entry->old_properties
+            && (
+                $this->newObject()->vars()->get('blacklisted_service') === null
+                && $this->oldObject()->vars()->get('blacklisted_service') === null
+            )
+        ) {
             $table->addNameValueRow(
                 $this->translate('Actions'),
                 $this->getRestoreForm()