diff --git a/core/Controller/AutoCompleteController.php b/core/Controller/AutoCompleteController.php
index aa67ff9a30..56ad21f421 100644
--- a/core/Controller/AutoCompleteController.php
+++ b/core/Controller/AutoCompleteController.php
@@ -34,17 +34,16 @@ use OCP\AppFramework\OCSController as Controller;
 use OCP\Collaboration\AutoComplete\AutoCompleteEvent;
 use OCP\Collaboration\AutoComplete\IManager;
 use OCP\Collaboration\Collaborators\ISearch;
+use OCP\EventDispatcher\IEventDispatcher;
 use OCP\IRequest;
-use OCP\Share;
 use OCP\Share\IShare;
-use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 
 class AutoCompleteController extends Controller {
 	/** @var ISearch */
 	private $collaboratorSearch;
 	/** @var IManager */
 	private $autoCompleteManager;
-	/** @var EventDispatcherInterface */
+	/** @var IEventDispatcher */
 	private $dispatcher;
 
 	public function __construct(
@@ -52,7 +51,7 @@ class AutoCompleteController extends Controller {
 		IRequest $request,
 		ISearch $collaboratorSearch,
 		IManager $autoCompleteManager,
-		EventDispatcherInterface $dispatcher
+		IEventDispatcher $dispatcher
 	) {
 		parent::__construct($appName, $request);
 
diff --git a/lib/public/Collaboration/AutoComplete/AutoCompleteEvent.php b/lib/public/Collaboration/AutoComplete/AutoCompleteEvent.php
index 776bd46d40..73128f618f 100644
--- a/lib/public/Collaboration/AutoComplete/AutoCompleteEvent.php
+++ b/lib/public/Collaboration/AutoComplete/AutoCompleteEvent.php
@@ -26,7 +26,7 @@ declare(strict_types=1);
 
 namespace OCP\Collaboration\AutoComplete;
 
-use Symfony\Component\EventDispatcher\GenericEvent;
+use OCP\EventDispatcher\GenericEvent;
 
 /**
  * @since 16.0.0
diff --git a/tests/Core/Controller/AutoCompleteControllerTest.php b/tests/Core/Controller/AutoCompleteControllerTest.php
index ea62b50219..73bc849211 100644
--- a/tests/Core/Controller/AutoCompleteControllerTest.php
+++ b/tests/Core/Controller/AutoCompleteControllerTest.php
@@ -26,9 +26,9 @@ namespace Tests\Core\Controller;
 use OC\Core\Controller\AutoCompleteController;
 use OCP\Collaboration\AutoComplete\IManager;
 use OCP\Collaboration\Collaborators\ISearch;
+use OCP\EventDispatcher\IEventDispatcher;
 use OCP\IRequest;
 use PHPUnit\Framework\MockObject\MockObject;
-use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 use Test\TestCase;
 
 class AutoCompleteControllerTest extends TestCase {
@@ -36,7 +36,7 @@ class AutoCompleteControllerTest extends TestCase {
 	protected $collaboratorSearch;
 	/** @var  IManager|MockObject */
 	protected $autoCompleteManager;
-	/** @var  EventDispatcherInterface|MockObject */
+	/** @var  IEventDispatcher|MockObject */
 	protected $dispatcher;
 	/** @var  AutoCompleteController */
 	protected $controller;
@@ -48,7 +48,7 @@ class AutoCompleteControllerTest extends TestCase {
 		$request = $this->createMock(IRequest::class);
 		$this->collaboratorSearch = $this->createMock(ISearch::class);
 		$this->autoCompleteManager = $this->createMock(IManager::class);
-		$this->dispatcher = $this->createMock(EventDispatcherInterface::class);
+		$this->dispatcher = $this->createMock(IEventDispatcher::class);
 
 		$this->controller = new AutoCompleteController(
 			'core',