diff --git a/tests/lib/User/AccountMapperTest.php b/tests/lib/User/AccountMapperTest.php
index 7b0cd66c0e77..85b6607c8ac1 100644
--- a/tests/lib/User/AccountMapperTest.php
+++ b/tests/lib/User/AccountMapperTest.php
@@ -25,6 +25,7 @@
 use OC\User\Account;
 use OC\User\AccountMapper;
 use OC\User\AccountTermMapper;
+use OCP\IConfig;
 use OCP\IDBConnection;
 use Test\TestCase;
 
@@ -37,13 +38,13 @@
  */
 class AccountMapperTest extends TestCase {
 
-	/**
-	 * @var IDBConnection
-	 */
+	/** @var IConfig | \PHPUnit_Framework_MockObject_MockObject */
+	protected $config;
+
+	/** @var IDBConnection */
 	protected $connection;
-	/**
-	 * @var AccountMapper
-	 */
+
+	/** @var AccountMapper */
 	protected $mapper;
 
 	public static function setUpBeforeClass() {
@@ -76,8 +77,16 @@ public static function setUpBeforeClass() {
 
 	public function setUp() {
 		parent::setUp();
+
+		$this->config = $this->createMock(IConfig::class);
+
 		$this->connection = \OC::$server->getDatabaseConnection();
-		$this->mapper = new AccountMapper($this->connection, new AccountTermMapper($this->connection));
+
+		$this->mapper = new AccountMapper(
+			$this->config,
+			$this->connection,
+			new AccountTermMapper($this->connection)
+		);
 	}
 
 	public static function tearDownAfterClass () {
@@ -91,7 +100,6 @@ public static function tearDownAfterClass () {
 	public function testFindAll() {
 		$result = $this->mapper->find("testfind");
 		$this->assertEquals(4, count($result));
-
 	}
 
 	/**
@@ -101,7 +109,6 @@ public function testFindByUserId() {
 		$result = $this->mapper->find("testfind1");
 		$this->assertEquals(1, count($result));
 		$this->assertEquals("TestFind1", array_shift($result)->getUserId());
-
 	}
 
 	/**
@@ -111,7 +118,6 @@ public function testFindByDisplayName() {
 		$result = $this->mapper->find('test find 2');
 		$this->assertEquals(1, count($result));
 		$this->assertEquals("TestFind2", array_shift($result)->getUserId());
-
 	}
 
 	/**
@@ -121,7 +127,6 @@ public function testFindByEmail() {
 		$result= $this->mapper->find('test3@find.tld');
 		$this->assertEquals(1, count($result));
 		$this->assertEquals("TestFind3", array_shift($result)->getUserId());
-
 	}
 
 	/**
@@ -131,7 +136,6 @@ public function testFindBySearchTerm() {
 		$result = $this->mapper->find('term 4 b');
 		$this->assertEquals(1, count($result));
 		$this->assertEquals("TestFind4", array_shift($result)->getUserId());
-
 	}
 
 	/**
@@ -143,6 +147,5 @@ public function testFindLimitAndOffset() {
 		//results are ordered by display name
 		$this->assertEquals("TestFind3", array_shift($result)->getUserId());
 		$this->assertEquals("TestFind4", array_shift($result)->getUserId());
-
 	}
 }
\ No newline at end of file