diff --git a/lib/internal/Magento/Framework/AclFactory.php b/lib/internal/Magento/Framework/AclFactory.php
index 3e9839830049d..a48000fbdd33c 100644
--- a/lib/internal/Magento/Framework/AclFactory.php
+++ b/lib/internal/Magento/Framework/AclFactory.php
@@ -31,6 +31,6 @@ public function __construct(\Magento\Framework\ObjectManagerInterface $objectMan
      */
     public function create()
     {
-        return $this->_objectManager->create('Magento\Framework\Acl');
+        return $this->_objectManager->create(Acl::class);
     }
 }
diff --git a/lib/internal/Magento/Framework/Controller/ResultFactory.php b/lib/internal/Magento/Framework/Controller/ResultFactory.php
index db78cf29c6301..1543368a9dd82 100644
--- a/lib/internal/Magento/Framework/Controller/ResultFactory.php
+++ b/lib/internal/Magento/Framework/Controller/ResultFactory.php
@@ -30,12 +30,12 @@ class ResultFactory
      * @var array
      */
     protected $typeMap = [
-        self::TYPE_JSON     => 'Magento\Framework\Controller\Result\Json',
-        self::TYPE_RAW      => 'Magento\Framework\Controller\Result\Raw',
-        self::TYPE_REDIRECT => 'Magento\Framework\Controller\Result\Redirect',
-        self::TYPE_FORWARD  => 'Magento\Framework\Controller\Result\Forward',
-        self::TYPE_LAYOUT   => 'Magento\Framework\View\Result\Layout',
-        self::TYPE_PAGE     => 'Magento\Framework\View\Result\Page',
+        self::TYPE_JSON     => Result\Json::class,
+        self::TYPE_RAW      => Result\Raw::class,
+        self::TYPE_REDIRECT => Result\Redirect::class,
+        self::TYPE_FORWARD  => Result\Forward::class,
+        self::TYPE_LAYOUT   => \Magento\Framework\View\Result\Layout::class,
+        self::TYPE_PAGE     => \Magento\Framework\View\Result\Page::class,
     ];
 
     /**
diff --git a/lib/internal/Magento/Framework/CurrencyFactory.php b/lib/internal/Magento/Framework/CurrencyFactory.php
index a1a126aecd1f9..1f87858182d0e 100644
--- a/lib/internal/Magento/Framework/CurrencyFactory.php
+++ b/lib/internal/Magento/Framework/CurrencyFactory.php
@@ -11,7 +11,7 @@
 class CurrencyFactory
 {
     /**
-     * @var \Magento\Framework\ObjectManagerInterface
+     * @var ObjectManagerInterface
      */
     protected $_objectManager = null;
 
@@ -21,10 +21,10 @@ class CurrencyFactory
     protected $_instanceName = null;
 
     /**
-     * @param \Magento\Framework\ObjectManagerInterface $objectManager
+     * @param ObjectManagerInterface $objectManager
      * @param string $instanceName
      */
-    public function __construct(\Magento\Framework\ObjectManagerInterface $objectManager, $instanceName = 'Magento\Framework\CurrencyInterface')
+    public function __construct(ObjectManagerInterface $objectManager, $instanceName = CurrencyInterface::class)
     {
         $this->_objectManager = $objectManager;
         $this->_instanceName = $instanceName;
@@ -34,7 +34,7 @@ public function __construct(\Magento\Framework\ObjectManagerInterface $objectMan
      * Create class instance with specified parameters
      *
      * @param array $data
-     * @return \Magento\Framework\CurrencyInterface
+     * @return CurrencyInterface
      */
     public function create(array $data = [])
     {
diff --git a/lib/internal/Magento/Framework/EventFactory.php b/lib/internal/Magento/Framework/EventFactory.php
index 47433049bac1b..e73cb8b96a094 100644
--- a/lib/internal/Magento/Framework/EventFactory.php
+++ b/lib/internal/Magento/Framework/EventFactory.php
@@ -26,6 +26,6 @@ public function __construct(\Magento\Framework\ObjectManagerInterface $objectMan
      */
     public function create($arguments = [])
     {
-        return $this->_objectManager->create('Magento\Framework\Event', $arguments);
+        return $this->_objectManager->create(Event::class, $arguments);
     }
 }
diff --git a/lib/internal/Magento/Framework/FlagFactory.php b/lib/internal/Magento/Framework/FlagFactory.php
index 99aa8d0047d19..fcd066591a061 100644
--- a/lib/internal/Magento/Framework/FlagFactory.php
+++ b/lib/internal/Magento/Framework/FlagFactory.php
@@ -32,7 +32,7 @@ class FlagFactory
      */
     public function __construct(
         \Magento\Framework\ObjectManagerInterface $objectManager,
-        $instanceName = 'Magento\Framework\Flag'
+        $instanceName = Flag::class
     ) {
         $this->_objectManager = $objectManager;
         $this->_instanceName = $instanceName;
diff --git a/lib/internal/Magento/Framework/UrlFactory.php b/lib/internal/Magento/Framework/UrlFactory.php
index f3e65d808ca58..65c7d55f1aac5 100644
--- a/lib/internal/Magento/Framework/UrlFactory.php
+++ b/lib/internal/Magento/Framework/UrlFactory.php
@@ -11,7 +11,7 @@
 class UrlFactory
 {
     /**
-     * @var \Magento\Framework\ObjectManagerInterface
+     * @var ObjectManagerInterface
      */
     protected $_objectManager = null;
 
@@ -21,10 +21,10 @@ class UrlFactory
     protected $_instanceName = null;
 
     /**
-     * @param \Magento\Framework\ObjectManagerInterface $objectManager
+     * @param ObjectManagerInterface $objectManager
      * @param string $instanceName
      */
-    public function __construct(\Magento\Framework\ObjectManagerInterface $objectManager, $instanceName = 'Magento\Framework\UrlInterface')
+    public function __construct(ObjectManagerInterface $objectManager, $instanceName = UrlInterface::class)
     {
         $this->_objectManager = $objectManager;
         $this->_instanceName = $instanceName;
@@ -34,7 +34,7 @@ public function __construct(\Magento\Framework\ObjectManagerInterface $objectMan
      * Create Url instance with specified parameters
      *
      * @param array $data
-     * @return \Magento\Framework\UrlInterface
+     * @return UrlInterface
      */
     public function create(array $data = [])
     {
diff --git a/lib/internal/Magento/Framework/ValidatorFactory.php b/lib/internal/Magento/Framework/ValidatorFactory.php
index 6ec20b8487358..6202a8b52cf3c 100644
--- a/lib/internal/Magento/Framework/ValidatorFactory.php
+++ b/lib/internal/Magento/Framework/ValidatorFactory.php
@@ -10,7 +10,7 @@
  */
 class ValidatorFactory
 {
-    const DEFAULT_INSTANCE_NAME = 'Magento\Framework\Validator';
+    const DEFAULT_INSTANCE_NAME = Validator::class;
 
     /**
      * Object Manager instance