diff --git a/apps/files_external/lib/amazons3.php b/apps/files_external/lib/amazons3.php
index 3800a14c37..d00e9a0823 100644
--- a/apps/files_external/lib/amazons3.php
+++ b/apps/files_external/lib/amazons3.php
@@ -41,7 +41,7 @@ class AmazonS3 extends \OC\Files\Storage\Common {
 			$this->s3 = new \AmazonS3(array('key' => $params['key'], 'secret' => $params['secret']));
 			$this->bucket = $params['bucket'];
 		} else {
-			throw new Exception();
+			throw new \Exception();
 		}
 	}
 
diff --git a/apps/files_external/lib/ftp.php b/apps/files_external/lib/ftp.php
index a76a3dc80f..fa8698af7a 100644
--- a/apps/files_external/lib/ftp.php
+++ b/apps/files_external/lib/ftp.php
@@ -35,7 +35,7 @@ class FTP extends \OC\Files\Storage\StreamWrapper{
 			if ( ! $this->root || $this->root[0]!='/') {
 				$this->root='/'.$this->root;
 			}
-			//create the root folder if necesary
+			//create the root folder if necessary
 			if ( ! $this->is_dir('')) {
 				$this->mkdir('');
 			}
@@ -88,7 +88,7 @@ class FTP extends \OC\Files\Storage\StreamWrapper{
 				} else {
 					$ext='';
 				}
-				$tmpFile=OCP\Files::tmpFile($ext);
+				$tmpFile=\OCP\Files::tmpFile($ext);
 				\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
 				if ($this->file_exists($path)) {
 					$this->getFile($path, $tmpFile);