diff --git a/lib/Db/AclMapper.php b/lib/Db/AclMapper.php
index 42aec5c4a..d34738d82 100644
--- a/lib/Db/AclMapper.php
+++ b/lib/Db/AclMapper.php
@@ -64,33 +64,33 @@ class AclMapper extends DeckMapper implements IPermissionMapper {
 	 * @return void
 	 */
 	public function transferOwnership($ownerId, $newOwnerId) {
-        $params = [
-            'owner' => $ownerId,
-            'newOwner' => $newOwnerId,
-            'type' => Acl::PERMISSION_TYPE_USER
-        ];
+		$params = [
+			'owner' => $ownerId,
+			'newOwner' => $newOwnerId,
+			'type' => Acl::PERMISSION_TYPE_USER
+		];
 		//We want preserve permissions from both users
-        $sql = "UPDATE `{$this->tableName}` AS `source` 
+		$sql = "UPDATE `{$this->tableName}` AS `source` 
                     LEFT JOIN `{$this->tableName}` AS `target` 
                     ON `target`.`participant` = :newOwner AND `target`.`type` = :type 
                     SET `source`.`permission_edit` =(`source`.`permission_edit` || `target`.`permission_edit`), 
                         `source`.`permission_share` =(`source`.`permission_share` || `target`.`permission_share`), 
                         `source`.`permission_manage` =(`source`.`permission_manage` || `target`.`permission_manage`) 
                     WHERE `source`.`participant` = :owner AND `source`.`type` = :type";
-        $stmt = $this->execute($sql, $params);
-        $stmt->closeCursor();
-        //We can't transfer acl if target already in acl
-        $sql = "DELETE FROM `{$this->tableName}` 
+		$stmt = $this->execute($sql, $params);
+		$stmt->closeCursor();
+		//We can't transfer acl if target already in acl
+		$sql = "DELETE FROM `{$this->tableName}` 
                     WHERE `participant` = :newOwner 
                         AND `type` = :type 
                         AND EXISTS (SELECT `id` FROM (SELECT `id` FROM `{$this->tableName}` 
                                     WHERE `participant` = :owner AND `type` = :type) as tmp)";
-        $stmt = $this->execute($sql, $params);
-        $stmt->closeCursor();
-        //Now we can transfer without errors
-        $sqlUpdate = "UPDATE `{$this->tableName}`  
+		$stmt = $this->execute($sql, $params);
+		$stmt->closeCursor();
+		//Now we can transfer without errors
+		$sqlUpdate = "UPDATE `{$this->tableName}`  
                         SET `participant` = :newOwner WHERE `participant` = :owner AND `type` = :type";
-        $stmt = $this->execute($sqlUpdate, $params);
-        $stmt->closeCursor();
+		$stmt = $this->execute($sqlUpdate, $params);
+		$stmt->closeCursor();
 	}
 }
diff --git a/lib/Db/AssignmentMapper.php b/lib/Db/AssignmentMapper.php
index d783cdedb..1c5e43819 100644
--- a/lib/Db/AssignmentMapper.php
+++ b/lib/Db/AssignmentMapper.php
@@ -155,16 +155,16 @@ class AssignmentMapper extends QBMapper implements IPermissionMapper {
 	public function transferOwnership($ownerId, $newOwnerId) {
 		$params = [
 			'newOwner' => $newOwnerId,
-            'type' => AssignedUsers::TYPE_USER
+			'type' => AssignedUsers::TYPE_USER
+		];
+		$sql = "DELETE FROM `{$this->tableName}`  WHERE `participant` = :newOwner AND `type`= :type";
+		$stmt = $this->execute($sql, $params);
+		$stmt->closeCursor();
+		$params = [
+			'owner' => $ownerId,
+			'newOwner' => $newOwnerId,
+			'type' => AssignedUsers::TYPE_USER
 		];
-        $sql = "DELETE FROM `{$this->tableName}`  WHERE `participant` = :newOwner AND `type`= :type";
-        $stmt = $this->execute($sql, $params);
-        $stmt->closeCursor();
-        $params = [
-            'owner' => $ownerId,
-            'newOwner' => $newOwnerId,
-            'type' => AssignedUsers::TYPE_USER
-        ];
 		$sql = "UPDATE `{$this->tableName}`  SET `participant` = :newOwner WHERE `participant` = :owner AND `type`= :type";
 		$stmt = $this->execute($sql, $params);
 		$stmt->closeCursor();
diff --git a/lib/Service/BoardService.php b/lib/Service/BoardService.php
index bbcc351e8..89652f286 100644
--- a/lib/Service/BoardService.php
+++ b/lib/Service/BoardService.php
@@ -685,9 +685,9 @@ class BoardService {
 	 */
 	public function transferOwnership($owner, $newOwner) {
 		$this->boardMapper->transferOwnership($owner, $newOwner);
-        $this->aclMapper->transferOwnership($owner, $newOwner);
-        $this->assignedUsersMapper->transferOwnership($owner, $newOwner);
-        $this->cardMapper->transferOwnership($owner, $newOwner);
+		$this->aclMapper->transferOwnership($owner, $newOwner);
+		$this->assignedUsersMapper->transferOwnership($owner, $newOwner);
+		$this->cardMapper->transferOwnership($owner, $newOwner);
 	}
 
 	private function enrichWithStacks($board, $since = -1) {
diff --git a/tests/integration/database/TransferOwnershipTest.php b/tests/integration/database/TransferOwnershipTest.php
index 459615860..582fca85d 100644
--- a/tests/integration/database/TransferOwnershipTest.php
+++ b/tests/integration/database/TransferOwnershipTest.php
@@ -66,7 +66,7 @@ class TransferOwnershipTest extends \Test\TestCase {
 		$this->boardService->addAcl($id, Acl::PERMISSION_TYPE_USER, self::TEST_USER_1, true, true, true);
 		$this->boardService->addAcl($id, Acl::PERMISSION_TYPE_GROUP, self::TEST_GROUP, true, true, true);
 		$this->boardService->addAcl($id, Acl::PERMISSION_TYPE_USER, self::TEST_USER_3, false, true, false);
-        $stacks[] = $this->stackService->create('Stack A', $id, 1);
+		$stacks[] = $this->stackService->create('Stack A', $id, 1);
 		$stacks[] = $this->stackService->create('Stack B', $id, 1);
 		$stacks[] = $this->stackService->create('Stack C', $id, 1);
 		$cards[] = $this->cardService->create('Card 1', $stacks[0]->getId(), 'text', 0, self::TEST_USER_1);
@@ -136,68 +136,68 @@ class TransferOwnershipTest extends \Test\TestCase {
 		$this->assertNotContains(self::TEST_USER_1, $participantsUIDs);
 	}
 
-    /**
-     * @covers ::transferOwnership
-     */
-    public function testReassignCardToNewParticipantOnlyIfParticipantHasUserType() {
-        $this->assignmentService->assignUser($this->cards[1]->getId(), self::TEST_USER_1, AssignedUsers::TYPE_GROUP);
-        $this->boardService->transferOwnership(self::TEST_USER_1, self::TEST_USER_2);
-        $assignedUsers = $this->assignedUsersMapper->find($this->cards[1]->getId());
-        $participantsUIDs = [];
-        foreach ($assignedUsers as $user) {
-            $participantsUIDs[] = $user->getParticipant();
-        }
-        $this->assertContains(self::TEST_USER_1, $participantsUIDs);
-        $this->assertNotContains(self::TEST_USER_2, $participantsUIDs);
-    }
+	/**
+	 * @covers ::transferOwnership
+	 */
+	public function testReassignCardToNewParticipantOnlyIfParticipantHasUserType() {
+		$this->assignmentService->assignUser($this->cards[1]->getId(), self::TEST_USER_1, AssignedUsers::TYPE_GROUP);
+		$this->boardService->transferOwnership(self::TEST_USER_1, self::TEST_USER_2);
+		$assignedUsers = $this->assignedUsersMapper->find($this->cards[1]->getId());
+		$participantsUIDs = [];
+		foreach ($assignedUsers as $user) {
+			$participantsUIDs[] = $user->getParticipant();
+		}
+		$this->assertContains(self::TEST_USER_1, $participantsUIDs);
+		$this->assertNotContains(self::TEST_USER_2, $participantsUIDs);
+	}
 
-    /**
-     * @covers ::transferOwnership
-     */
-    public function testTargetAlreadyParticipantOfBoard() {
-        $this->expectNotToPerformAssertions();
-        $this->boardService->transferOwnership(self::TEST_USER_1, self::TEST_USER_3);
-    }
+	/**
+	 * @covers ::transferOwnership
+	 */
+	public function testTargetAlreadyParticipantOfBoard() {
+		$this->expectNotToPerformAssertions();
+		$this->boardService->transferOwnership(self::TEST_USER_1, self::TEST_USER_3);
+	}
 
-    /**
-     * @covers ::transferOwnership
-     */
-    public function testDontRemoveTargetFromAcl() {
-        $this->boardService->transferOwnership(self::TEST_USER_2, self::TEST_USER_3);
-        $board = $this->boardService->find($this->board->getId());
-        $acl = $board->getAcl();
-        $isOwnerInAcl = (bool)array_filter($acl, function ($item) {
-            return $item->getParticipant() === self::TEST_USER_3 && $item->getType() === Acl::PERMISSION_TYPE_USER;
-        });
-        $this->assertTrue($isOwnerInAcl);
-    }
+	/**
+	 * @covers ::transferOwnership
+	 */
+	public function testDontRemoveTargetFromAcl() {
+		$this->boardService->transferOwnership(self::TEST_USER_2, self::TEST_USER_3);
+		$board = $this->boardService->find($this->board->getId());
+		$acl = $board->getAcl();
+		$isOwnerInAcl = (bool)array_filter($acl, function ($item) {
+			return $item->getParticipant() === self::TEST_USER_3 && $item->getType() === Acl::PERMISSION_TYPE_USER;
+		});
+		$this->assertTrue($isOwnerInAcl);
+	}
 
-    /**
-     * @covers ::transferOwnership
-     */
-    public function testMergePermissions() {
-        $this->boardService->addAcl($this->board->getId(), Acl::PERMISSION_TYPE_USER, self::TEST_USER_2, true, false, true);
-        $this->boardService->transferOwnership(self::TEST_USER_2, self::TEST_USER_3);
-        $board = $this->boardService->find($this->board->getId());
-        $acl = $board->getAcl();
-        $isMerged = (bool)array_filter($acl, function ($item) {
-            return $item->getParticipant() === self::TEST_USER_1
-                && $item->getType() === Acl::PERMISSION_TYPE_USER
-                && $item->getPermission(Acl::PERMISSION_EDIT)
-                && $item->getPermission(Acl::PERMISSION_SHARE)
-                && $item->getPermission(Acl::PERMISSION_MANAGE);
-        });
-        $this->assertTrue($isMerged);
-    }
+	/**
+	 * @covers ::transferOwnership
+	 */
+	public function testMergePermissions() {
+		$this->boardService->addAcl($this->board->getId(), Acl::PERMISSION_TYPE_USER, self::TEST_USER_2, true, false, true);
+		$this->boardService->transferOwnership(self::TEST_USER_2, self::TEST_USER_3);
+		$board = $this->boardService->find($this->board->getId());
+		$acl = $board->getAcl();
+		$isMerged = (bool)array_filter($acl, function ($item) {
+			return $item->getParticipant() === self::TEST_USER_1
+				&& $item->getType() === Acl::PERMISSION_TYPE_USER
+				&& $item->getPermission(Acl::PERMISSION_EDIT)
+				&& $item->getPermission(Acl::PERMISSION_SHARE)
+				&& $item->getPermission(Acl::PERMISSION_MANAGE);
+		});
+		$this->assertTrue($isMerged);
+	}
 
-    /**
-     * @covers ::transferOwnership
-     */
-    public function testTargetAlreadyParticipantOfCard() {
-        $this->expectNotToPerformAssertions();
-        $this->assignmentService->assignUser($this->cards[0]->getId(), self::TEST_USER_3, AssignedUsers::TYPE_USER);
-        $this->boardService->transferOwnership(self::TEST_USER_1, self::TEST_USER_3);
-    }
+	/**
+	 * @covers ::transferOwnership
+	 */
+	public function testTargetAlreadyParticipantOfCard() {
+		$this->expectNotToPerformAssertions();
+		$this->assignmentService->assignUser($this->cards[0]->getId(), self::TEST_USER_3, AssignedUsers::TYPE_USER);
+		$this->boardService->transferOwnership(self::TEST_USER_1, self::TEST_USER_3);
+	}
 
 	public function tearDown(): void {
 		$this->boardService->deleteForce($this->board->getId());
diff --git a/tests/unit/Service/BoardServiceTest.php b/tests/unit/Service/BoardServiceTest.php
index c64422ff5..600f6a37c 100644
--- a/tests/unit/Service/BoardServiceTest.php
+++ b/tests/unit/Service/BoardServiceTest.php
@@ -59,8 +59,8 @@ class BoardServiceTest extends TestCase {
 	private $boardMapper;
 	/** @var StackMapper */
 	private $stackMapper;
-    /** @var CardMapper */
-    private $cardMapper;
+	/** @var CardMapper */
+	private $cardMapper;
 	/** @var PermissionService */
 	private $permissionService;
 	/** @var NotificationHelper */