diff --git a/api/src/Etemplate/Widget/Vfs.php b/api/src/Etemplate/Widget/Vfs.php
index 7882d6beba..3950fdef1f 100644
--- a/api/src/Etemplate/Widget/Vfs.php
+++ b/api/src/Etemplate/Widget/Vfs.php
@@ -254,7 +254,12 @@ class Vfs extends File
 		{
 			$path .= Api\Vfs::encodePathComponent($filename);
 		}
-		if (!($dir = Api\Vfs::dirname($path)) || !Api\Vfs::file_exists($dir) && !Api\Vfs::mkdir($dir,null,STREAM_MKDIR_RECURSIVE))
+		if (!($dir = Api\Vfs::dirname($path)))
+		{
+			self::set_validation_error($name,lang('Error create parent directory %1!', "dirname('$path') === false"));
+			return false;
+		}
+		if (!Api\Vfs::file_exists($dir) && !Api\Vfs::mkdir($dir,null,STREAM_MKDIR_RECURSIVE))
 		{
 			self::set_validation_error($name,lang('Error create parent directory %1!',Api\Vfs::decodePath($dir)));
 			return false;