diff --git a/lib/files.php b/lib/files.php
index 1e88a7b608d7ca9ad6f88ceff3f831eccba17ab7..885f6977fbd15715dd36829401641654b3948ef1 100644
--- a/lib/files.php
+++ b/lib/files.php
@@ -170,7 +170,7 @@ class OC_Files {
 	* @param file $target
 	*/
 	public static function move($sourceDir,$source,$targetDir,$target){
-		if(OC_User::isLoggedIn()){
+		if(OC_User::isLoggedIn() && ($sourceDir != '' || $source != 'Shared')){
 			$targetFile=self::normalizePath($targetDir.'/'.$target);
 			$sourceFile=self::normalizePath($sourceDir.'/'.$source);
 			return OC_Filesystem::rename($sourceFile,$targetFile);