diff --git a/app/code/Magento/CatalogRule/Controller/Adminhtml/Promo/Widget/CategoriesJson.php b/app/code/Magento/CatalogRule/Controller/Adminhtml/Promo/Widget/CategoriesJson.php
index 3d9dcd05f8fac..d049d74bd2601 100644
--- a/app/code/Magento/CatalogRule/Controller/Adminhtml/Promo/Widget/CategoriesJson.php
+++ b/app/code/Magento/CatalogRule/Controller/Adminhtml/Promo/Widget/CategoriesJson.php
@@ -32,7 +32,7 @@ public function __construct(Context $context, Registry $coreRegistry)
     /**
      * Initialize category object in registry
      *
-     * @return Category
+     * @return Category|bool
      */
     protected function _initCategory()
     {
diff --git a/app/code/Magento/CatalogSearch/Model/ResourceModel/Engine.php b/app/code/Magento/CatalogSearch/Model/ResourceModel/Engine.php
index ffba417eb3ac7..fac8c4d2a47f6 100644
--- a/app/code/Magento/CatalogSearch/Model/ResourceModel/Engine.php
+++ b/app/code/Magento/CatalogSearch/Model/ResourceModel/Engine.php
@@ -120,7 +120,7 @@ public function processAttributeValue($attribute, $value)
      *
      * @param array $index
      * @param string $separator
-     * @return string
+     * @return array
      */
     public function prepareEntityIndex($index, $separator = ' ')
     {
diff --git a/app/code/Magento/UrlRewrite/Service/V1/Data/UrlRewrite.php b/app/code/Magento/UrlRewrite/Service/V1/Data/UrlRewrite.php
index 195c0fc10dc07..38025f21cdab1 100644
--- a/app/code/Magento/UrlRewrite/Service/V1/Data/UrlRewrite.php
+++ b/app/code/Magento/UrlRewrite/Service/V1/Data/UrlRewrite.php
@@ -79,7 +79,7 @@ public function getUrlRewriteId()
 
     /**
      * @param int $urlRewriteId
-     * @return int
+     * @return $this
      */
     public function setUrlRewriteId($urlRewriteId)
     {
diff --git a/app/code/Magento/User/Model/Backend/Config/ObserverConfig.php b/app/code/Magento/User/Model/Backend/Config/ObserverConfig.php
index c1b7e6a1110f7..6d921dfdcdd65 100644
--- a/app/code/Magento/User/Model/Backend/Config/ObserverConfig.php
+++ b/app/code/Magento/User/Model/Backend/Config/ObserverConfig.php
@@ -72,7 +72,7 @@ public function getAdminPasswordLifetime()
     }
 
     /**
-     * Get admin maxiumum security failures from config
+     * Get admin maximum security failures from config
      *
      * @return int
      */