diff --git a/tests/stubs/oca-analytics-idatasource.php b/tests/stubs/oca-analytics-idatasource.php
index 8b366e4d8f..900e1f0f81 100644
--- a/tests/stubs/oca-analytics-idatasource.php
+++ b/tests/stubs/oca-analytics-idatasource.php
@@ -2,13 +2,12 @@
 
 // reference for: use OCA\Analytics\Datasource\DatasourceEvent;
 namespace OCA\Analytics\Datasource {
-	class DatasourceEvent extends \OCP\EventDispatcher\Event {
-		abstract public function registerDatasource(string $datasource): void {
-		}
-		abstract public function getDataSources(): array {
-		}
-	}
+	use OCP\EventDispatcher\Event;
 
+	interface DatasourceEvent extends Event {
+		public function registerDatasource(string $datasource): void;
+		public function getDataSources(): array;
+	}
 	interface IDatasource {
 		public function getName(): string;
 		public function getId(): int;