From bf361db5fca1671a0bf694bab106c0867e8e49cc Mon Sep 17 00:00:00 2001
From: Flavio Copes <copesc@gmail.com>
Date: Mon, 21 Dec 2015 16:26:05 +0100
Subject: [PATCH] File field validation, handle case multiple not specified

---
 system/src/Grav/Common/Data/Validation.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/system/src/Grav/Common/Data/Validation.php b/system/src/Grav/Common/Data/Validation.php
index 9f0266bd4..9387effba 100644
--- a/system/src/Grav/Common/Data/Validation.php
+++ b/system/src/Grav/Common/Data/Validation.php
@@ -283,7 +283,7 @@ class Validation
 
     protected static function filterFile($value, array $params, array $field)
     {
-        if ($field['multiple'] == true) {
+        if (isset($field['multiple']) && $field['multiple'] == true) {
             return (array) $value;
         }