diff --git a/app/code/Magento/Tax/Model/Config.php b/app/code/Magento/Tax/Model/Config.php
index 713b34c16d1f2..64f5b44803848 100644
--- a/app/code/Magento/Tax/Model/Config.php
+++ b/app/code/Magento/Tax/Model/Config.php
@@ -831,12 +831,12 @@ public function getInfoUrl($store = null)
      * If it necessary will be returned conversion type (minus or plus)
      *
      * @param null|int|string|Store $store
-     * @return bool
+     * @return bool|int
      * @SuppressWarnings(PHPMD.CyclomaticComplexity)
      */
     public function needPriceConversion($store = null)
     {
-        $res = false;
+        $res = 0;
         $priceIncludesTax = $this->priceIncludesTax($store) || $this->getNeedUseShippingExcludeTax();
         if ($priceIncludesTax) {
             switch ($this->getPriceDisplayType($store)) {
@@ -844,7 +844,7 @@ public function needPriceConversion($store = null)
                 case self::DISPLAY_TYPE_BOTH:
                     return self::PRICE_CONVERSION_MINUS;
                 case self::DISPLAY_TYPE_INCLUDING_TAX:
-                    $res = true;
+                    $res = false;
                     break;
                 default:
                     break;