diff --git a/lib/base.php b/lib/base.php
index 610ee325550d59f328057ff16601cc87e6e90b0a..a84f12f2f279fe07d035a83be5446b7504b2d103 100644
--- a/lib/base.php
+++ b/lib/base.php
@@ -778,8 +778,6 @@ class OC {
 	public static function registerShareHooks() {
 		if (\OC::$server->getSystemConfig()->getValue('installed')) {
 			OC_Hook::connect('OC_User', 'post_deleteUser', 'OC\Share20\Hooks', 'post_deleteUser');
-			OC_Hook::connect('OC_User', 'post_addToGroup', 'OC\Share\Hooks', 'post_addToGroup');
-			OC_Hook::connect('OC_Group', 'pre_addToGroup', 'OC\Share\Hooks', 'pre_addToGroup');
 			OC_Hook::connect('OC_User', 'post_removeFromGroup', 'OC\Share\Hooks', 'post_removeFromGroup');
 			OC_Hook::connect('OC_User', 'post_deleteGroup', 'OC\Share\Hooks', 'post_deleteGroup');
 		}
diff --git a/lib/private/share/hooks.php b/lib/private/share/hooks.php
index dae273eefb8f17a917fead1bcedec632b2955b57..999efc7ca70bf63bdb425ebf3fd7bc32a65c6dab 100644
--- a/lib/private/share/hooks.php
+++ b/lib/private/share/hooks.php
@@ -25,124 +25,6 @@
 namespace OC\Share;
 
 class Hooks extends \OC\Share\Constants {
-
-	/**
-	 * remember which targets need to be updated in the post addToGroup Hook
-	 * @var array
-	 */
-	private static $updateTargets = array();
-
-	/**
-	 * Function that is called before a user is added to a group.
-	 * check if we need to create a unique target for the user
-	 * @param array $arguments
-	 */
-	public static function pre_addToGroup($arguments) {
-		$currentUser = \OC::$server->getUserSession()->getUser();
-		$currentUserID = is_null($currentUser) ? '' : $currentUser->getUID();
-
-		// setup filesystem for added user if it isn't the current user
-		if($currentUserID !== $arguments['uid']) {
-			\OC_Util::tearDownFS();
-			\OC_Util::setupFS($arguments['uid']);
-		}
-
-		/** @var \OC\DB\Connection $db */
-		$db = \OC::$server->getDatabaseConnection();
-
-		$insert = $db->createQueryBuilder();
-
-		$select = $db->createQueryBuilder();
-		// Find the group shares and check if the user needs a unique target
-		$select->select('*')
-			->from('`*PREFIX*share`')
-			->where($select->expr()->andX(
-				$select->expr()->eq('`share_type`', ':shareType'),
-				$select->expr()->eq('`share_with`', ':shareWith')
-			))
-			->setParameter('shareType', self::SHARE_TYPE_GROUP)
-			->setParameter('shareWith', $arguments['gid']);
-
-		$result = $select->execute();
-
-		while ($item = $result->fetch()) {
-
-			$itemTarget = Helper::generateTarget(
-				$item['item_type'],
-				$item['item_source'],
-				self::SHARE_TYPE_USER,
-				$arguments['uid'],
-				$item['uid_owner'],
-				null,
-				$item['parent']
-			);
-
-			if ($item['item_type'] === 'file' || $item['item_type'] === 'folder') {
-				$fileTarget = Helper::generateTarget(
-					$item['item_type'],
-					$item['file_target'],
-					self::SHARE_TYPE_USER,
-					$arguments['uid'],
-					$item['uid_owner'],
-					null,
-					$item['parent']
-				);
-			} else {
-				$fileTarget = null;
-			}
-
-
-			// Insert an extra row for the group share if the item or file target is unique for this user
-			if (
-				($fileTarget === null && $itemTarget != $item['item_target'])
-				|| ($fileTarget !== null && $fileTarget !== $item['file_target'])
-			) {
-				self::$updateTargets[$arguments['gid']][] = [
-					'`item_type`' => $insert->expr()->literal($item['item_type']),
-					'`item_source`' => $insert->expr()->literal($item['item_source']),
-					'`item_target`' => $insert->expr()->literal($itemTarget),
-					'`file_target`' => $insert->expr()->literal($fileTarget),
-					'`parent`' => $insert->expr()->literal($item['id']),
-					'`share_type`' => $insert->expr()->literal(self::$shareTypeGroupUserUnique),
-					'`share_with`' => $insert->expr()->literal($arguments['uid']),
-					'`uid_owner`' => $insert->expr()->literal($item['uid_owner']),
-					'`permissions`' => $insert->expr()->literal($item['permissions']),
-					'`stime`' => $insert->expr()->literal($item['stime']),
-					'`file_source`' => $insert->expr()->literal($item['file_source']),
-				];
-			}
-		}
-
-		// re-setup old filesystem state
-		if($currentUserID !== $arguments['uid']) {
-			\OC_Util::tearDownFS();
-			if($currentUserID !== '') {
-				\OC_Util::setupFS($currentUserID);
-			}
-		}
-	}
-
-	/**
-	 * Function that is called after a user is added to a group.
-	 * add unique target for the user if needed
-	 * @param array $arguments
-	 */
-	public static function post_addToGroup($arguments) {
-		/** @var \OC\DB\Connection $db */
-		$db = \OC::$server->getDatabaseConnection();
-
-		$insert = $db->createQueryBuilder();
-		$insert->insert('`*PREFIX*share`');
-
-		if (isset(self::$updateTargets[$arguments['gid']])) {
-			foreach (self::$updateTargets[$arguments['gid']] as $newTarget) {
-				$insert->values($newTarget);
-				$insert->execute();
-			}
-			unset(self::$updateTargets[$arguments['gid']]);
-		}
-	}
-
 	/**
 	 * Function that is called after a user is removed from a group. Shares are cleaned up.
 	 * @param array $arguments
diff --git a/tests/lib/share/hooktests.php b/tests/lib/share/hooktests.php
deleted file mode 100644
index 7e6aaa259f237e12a672f2ae07e54bc450d926b6..0000000000000000000000000000000000000000
--- a/tests/lib/share/hooktests.php
+++ /dev/null
@@ -1,115 +0,0 @@
-<?php
-/**
- * @author Bjƶrn SchieƟle <schiessle@owncloud.com>
- *
- * @copyright Copyright (c) 2015, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * 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, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-
-namespace OC\Tests\Share;
-
-
-use Test\TestCase;
-
-/**
- * Class HookTests
- *
- * @group DB
- *
- * @package OC\Tests\Share
- */
-class HookTests extends TestCase {
-
-	protected function setUp() {
-		parent::setUp();
-	}
-
-	protected function tearDown() {
-		$query = \OC_DB::prepare('DELETE FROM `*PREFIX*share` WHERE `item_type` = ?');
-		$query->execute(array('test'));
-
-		parent::tearDown();
-	}
-
-	public function testPostAddToGroup() {
-
-		/** @var \OC\DB\Connection $connection */
-		$connection = \OC::$server->getDatabaseConnection();
-		$query = $connection->createQueryBuilder();
-		$expr = $query->expr();
-
-		// add some dummy values to the private $updateTargets variable
-		$this->invokePrivate(
-			new \OC\Share\Hooks(),
-			'updateTargets',
-			[
-				[
-					'group1' =>
-						[
-							[
-								'`item_type`' => $expr->literal('test'),
-								'`item_source`' => $expr->literal('42'),
-								'`item_target`' => $expr->literal('42'),
-								'`file_target`' => $expr->literal('test'),
-								'`share_type`' => $expr->literal('2'),
-								'`share_with`' => $expr->literal('group1'),
-								'`uid_owner`' => $expr->literal('owner'),
-								'`permissions`' => $expr->literal('0'),
-								'`stime`' => $expr->literal('676584'),
-								'`file_source`' => $expr->literal('42'),
-							],
-							[
-								'`item_type`' => $expr->literal('test'),
-								'`item_source`' => $expr->literal('42'),
-								'`item_target`' => $expr->literal('42 (2)'),
-								'`share_type`' => $expr->literal('2'),
-								'`share_with`' => $expr->literal('group1'),
-								'`uid_owner`' => $expr->literal('owner'),
-								'`permissions`' => $expr->literal('0'),
-								'`stime`' => $expr->literal('676584'),
-							]
-						],
-					'group2' =>
-						[
-							[
-								'`item_type`' => $expr->literal('test'),
-								'`item_source`' => $expr->literal('42'),
-								'`item_target`' => $expr->literal('42'),
-								'`share_type`' => $expr->literal('2'),
-								'`share_with`' => $expr->literal('group2'),
-								'`uid_owner`' => $expr->literal('owner'),
-								'`permissions`' => $expr->literal('0'),
-								'`stime`' => $expr->literal('676584'),
-							]
-						]
-				]
-			]
-		);
-
-		// add unique targets for group1 to database
-		\OC\Share\Hooks::post_addToGroup(['gid' => 'group1']);
-
-
-		$query->select('`share_with`')->from('`*PREFIX*share`');
-		$result = $query->execute()->fetchAll();
-		$this->assertSame(2, count($result));
-		foreach ($result as $r) {
-			$this->assertSame('group1', $r['share_with']);
-		}
-	}
-
-}