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;