diff --git a/app/Http/Middleware/CORSMiddleware.php b/app/Http/Middleware/CORSMiddleware.php
index 8f839107..23d9697a 100644
--- a/app/Http/Middleware/CORSMiddleware.php
+++ b/app/Http/Middleware/CORSMiddleware.php
@@ -49,10 +49,11 @@ class CORSMiddleware
 		'origin',
 	);
 
-	protected static $simple_content_header_values = array(
+	protected static $simple_content_header_values = [
 		'application/x-www-form-urlencode',
 		'multipart/form-data',
-		'text/plain');
+		'text/plain'
+    ];
 
 	/**
 	 * A method is said to be a simple method if it is a case-sensitive match for one of the following:
@@ -459,7 +460,12 @@ class CORSMiddleware
 
 		$type         = CORSRequestPreflightType::UNKNOWN;
 		$http_method  = $request->getMethod();
-		$content_type = strtolower($request->getContentType());
+		$content_type = $request->headers->has('Content-Type')  ? strtolower( $request->headers->get('Content-Type')) : null;
+
+		if (false !== $pos = strpos($content_type, ';')) {
+            $content_type = substr($content_type, 0, $pos);
+        }
+
 		$http_method  = strtoupper($http_method);
 
 		if ($http_method === 'OPTIONS' && $request->headers->has('Access-Control-Request-Method'))
diff --git a/composer.json b/composer.json
index ffdb2bff..0fb58ca2 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,8 @@
         "guzzlehttp/guzzle": "^6.3",
         "google/apiclient": "^2.2",
         "smarcet/caldavclient": "dev-master",
-        "smarcet/outlook-rest-client": "dev-master"
+        "smarcet/outlook-rest-client": "dev-master",
+        "idct/sftp-client": "dev-master"
     },
     "require-dev": {
         "fzaninotto/faker": "~1.4",