diff --git a/apps/files_sharing/ajax/email.php b/apps/files_sharing/ajax/email.php
index d6d53c49bff..145026bbcd1 100644
--- a/apps/files_sharing/ajax/email.php
+++ b/apps/files_sharing/ajax/email.php
@@ -1,7 +1,4 @@
 <?php
-
-require_once('../../../lib/base.php');
-
 OC_JSON::checkLoggedIn();
 OC_JSON::checkAppEnabled('files_sharing');
 $user = OC_User::getUser();
diff --git a/apps/files_sharing/ajax/getitem.php b/apps/files_sharing/ajax/getitem.php
index c838895efbe..6f8d5247580 100644
--- a/apps/files_sharing/ajax/getitem.php
+++ b/apps/files_sharing/ajax/getitem.php
@@ -3,7 +3,7 @@
 
  
 OC_JSON::checkAppEnabled('files_sharing');
-require_once('../lib_share.php');
+require_once(OC::$APPSROOT . '/apps/files_sharing/lib_share.php');
 
 $userDirectory = "/".OC_User::getUser()."/files";
 $source = $userDirectory.$_GET['source'];
diff --git a/apps/files_sharing/ajax/setpermissions.php b/apps/files_sharing/ajax/setpermissions.php
index d46f6f0c7b4..60302d034f7 100644
--- a/apps/files_sharing/ajax/setpermissions.php
+++ b/apps/files_sharing/ajax/setpermissions.php
@@ -3,7 +3,7 @@
 
  
 OC_JSON::checkAppEnabled('files_sharing');
-require_once('../lib_share.php');
+require_once(OC::$APPSROOT . '/apps/files_sharing/lib_share.php');
 
 $source = "/".OC_User::getUser()."/files".$_GET['source'];
 $uid_shared_with = $_GET['uid_shared_with'];
diff --git a/apps/files_sharing/ajax/share.php b/apps/files_sharing/ajax/share.php
index cd9166913cb..50c6d4c9d25 100644
--- a/apps/files_sharing/ajax/share.php
+++ b/apps/files_sharing/ajax/share.php
@@ -3,7 +3,7 @@
 
  
 OC_JSON::checkAppEnabled('files_sharing');
-require_once('../lib_share.php');
+require_once(OC::$APPSROOT . '/apps/files_sharing/lib_share.php');
 
 $userDirectory = "/".OC_User::getUser()."/files";
 $sources = explode(";", $_POST['sources']);
diff --git a/apps/files_sharing/ajax/toggleresharing.php b/apps/files_sharing/ajax/toggleresharing.php
index 72af1eedec1..bd4d23ff79f 100644
--- a/apps/files_sharing/ajax/toggleresharing.php
+++ b/apps/files_sharing/ajax/toggleresharing.php
@@ -1,7 +1,5 @@
 <?php
 
-require_once('../../../lib/base.php');
-
 OC_JSON::checkAppEnabled('files_sharing');
 OC_JSON::checkAdminUser();
 if ($_POST['resharing'] == true) {
diff --git a/apps/files_sharing/ajax/unshare.php b/apps/files_sharing/ajax/unshare.php
index 150d6504863..7e99b5fe374 100644
--- a/apps/files_sharing/ajax/unshare.php
+++ b/apps/files_sharing/ajax/unshare.php
@@ -3,7 +3,7 @@
 
  
 OC_JSON::checkAppEnabled('files_sharing');
-require_once('../lib_share.php');
+require_once(OC::$APPSROOT . '/apps/files_sharing/lib_share.php');
 
 $source = "/".OC_User::getUser()."/files".$_GET['source'];
 $uid_shared_with = $_GET['uid_shared_with'];