diff --git a/apps/workflowengine/lib/Manager.php b/apps/workflowengine/lib/Manager.php
index 9140ef73ea..e93498b507 100644
--- a/apps/workflowengine/lib/Manager.php
+++ b/apps/workflowengine/lib/Manager.php
@@ -300,7 +300,6 @@ class Manager implements IManager {
 			->where($query->expr()->in('id', $query->createNamedParameter($checkIds, IQueryBuilder::PARAM_INT_ARRAY)));
 		$result = $query->execute();
 
-		$checks = [];
 		while ($row = $result->fetch()) {
 			$this->checks[(int) $row['id']] = $row;
 			$checks[(int) $row['id']] = $row;
diff --git a/apps/workflowengine/tests/ManagerTest.php b/apps/workflowengine/tests/ManagerTest.php
new file mode 100644
index 0000000000..9136bf0e7c
--- /dev/null
+++ b/apps/workflowengine/tests/ManagerTest.php
@@ -0,0 +1,94 @@
+<?php
+/**
+ * @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\WorkflowEngine\Tests;
+
+
+use OCA\WorkflowEngine\Manager;
+use OCP\IDBConnection;
+use OCP\IL10N;
+use OCP\IServerContainer;
+use Test\TestCase;
+
+/**
+ * Class ManagerTest
+ *
+ * @package OCA\WorkflowEngine\Tests
+ * @group DB
+ */
+class ManagerTest extends TestCase {
+
+	/** @var Manager */
+	protected $manager;
+	/** @var IDBConnection */
+	protected $db;
+
+	protected function setUp() {
+		parent::setUp();
+
+		$this->db = \OC::$server->getDatabaseConnection();
+		$container = $this->createMock(IServerContainer::class);
+		$l = $this->createMock(IL10N::class);
+		$l->method('t')
+			->will($this->returnCallback(function($text, $parameters = []) {
+				return vsprintf($text, $parameters);
+			}));
+
+		$this->manager = new Manager(
+			\OC::$server->getDatabaseConnection(),
+			$container,
+			$l
+		);
+		$this->clearChecks();
+	}
+
+	protected function tearDown() {
+		$this->clearChecks();
+		parent::tearDown();
+	}
+
+	public function clearChecks() {
+		$query = $this->db->getQueryBuilder();
+		$query->delete('flow_checks')
+			->execute();
+	}
+
+	public function testChecks() {
+		$check1 = $this->invokePrivate($this->manager, 'addCheck', ['Test', 'equal', 1]);
+		$check2 = $this->invokePrivate($this->manager, 'addCheck', ['Test', '!equal', 2]);
+
+		$data = $this->manager->getChecks([$check1]);
+		$this->assertArrayHasKey($check1, $data);
+		$this->assertArrayNotHasKey($check2, $data);
+
+		$data = $this->manager->getChecks([$check1, $check2]);
+		$this->assertArrayHasKey($check1, $data);
+		$this->assertArrayHasKey($check2, $data);
+
+		$data = $this->manager->getChecks([$check2, $check1]);
+		$this->assertArrayHasKey($check1, $data);
+		$this->assertArrayHasKey($check2, $data);
+
+		$data = $this->manager->getChecks([$check2]);
+		$this->assertArrayNotHasKey($check1, $data);
+		$this->assertArrayHasKey($check2, $data);
+	}
+}