From 5a9fef256c76f9b93abf684b1c792ff1f2b1a892 Mon Sep 17 00:00:00 2001
From: Valerij Ivashchenko <likemusic@yandex.ru>
Date: Thu, 5 Jul 2018 18:26:42 +0300
Subject: [PATCH] smallest fix in Option/Type/Text.php

---
 app/code/Magento/Catalog/Model/Product/Option/Type/Text.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/code/Magento/Catalog/Model/Product/Option/Type/Text.php b/app/code/Magento/Catalog/Model/Product/Option/Type/Text.php
index 79ee37c51671d..5624733831c1a 100644
--- a/app/code/Magento/Catalog/Model/Product/Option/Type/Text.php
+++ b/app/code/Magento/Catalog/Model/Product/Option/Type/Text.php
@@ -81,7 +81,7 @@ public function validateUserValue($values)
      */
     public function prepareForCart()
     {
-        if ($this->getIsValid() && strlen($this->getUserValue()) > 0) {
+        if ($this->getIsValid() && ($this->getUserValue() !== '')) {
             return $this->getUserValue();
         } else {
             return null;