diff --git a/apps/files_sharing/ajax/email.php b/apps/files_sharing/ajax/email.php
index d6d53c49bff853f7c1d580a209f578653af3f41f..145026bbcd1e4e4998552de70efc155272aab61e 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 c838895efbe269497ee65ac4b6b5d7e835b4b937..6f8d524758032af0791cb4a346e9d22491f9a214 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 d46f6f0c7b4346c4573b4b2a1cf6a38911e6a32a..60302d034f7dd6755fdaf4239737b0c48ba18b75 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 cd9166913cb9e57bfb95691122898dd4f303461a..50c6d4c9d25b247f6a3c4b3b37e6816ba61a0cb2 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 72af1eedec119bc8cd86c89fda352033aa65918f..bd4d23ff79fc6b6b0305965b1b53f117776d4689 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 150d6504863220374e27c5800f9048011f1a740f..7e99b5fe374753c114e405fed459f1c733931f89 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'];