diff --git a/reference/configuration/kernel.rst b/reference/configuration/kernel.rst
index 6297fb9bded..42e8a1a05aa 100644
--- a/reference/configuration/kernel.rst
+++ b/reference/configuration/kernel.rst
@@ -13,7 +13,7 @@ Configuration
 
 * `Charset`_
 * `Kernel Name`_
-* `Root Directory`_
+* `Project Directory`_
 * `Cache Directory`_
 * `Log Directory`_
 
@@ -53,42 +53,9 @@ generation of cache files. If you have an application with multiple kernels,
 the easiest way to make each have a unique name is to duplicate the ``app``
 directory and rename it to something else (e.g. ``foo``).
 
-Root Directory
-~~~~~~~~~~~~~~
-
-.. versionadded:: 3.3
-
-    The ``getRootDir()`` method is deprecated since Symfony 3.3. Use the new
-    ``getProjectDir()`` method instead.
-
-**type**: ``string`` **default**: the directory of ``AppKernel``
-
-This returns the root directory of your kernel. If you use the Symfony Standard
-edition, the root directory refers to the ``app`` directory.
-
-To change this setting, override the
-:method:`Symfony\\Component\\HttpKernel\\Kernel::getRootDir` method::
-
-    // app/AppKernel.php
-
-    // ...
-    class AppKernel extends Kernel
-    {
-        // ...
-
-        public function getRootDir()
-        {
-            return realpath(parent::getRootDir().'/../');
-        }
-    }
-
 Project Directory
 ~~~~~~~~~~~~~~~~~
 
-.. versionadded:: 3.3
-
-    The ``getProjectDir()`` method was introduced in Symfony 3.3.
-
 **type**: ``string`` **default**: the directory of the project ``composer.json``
 
 This returns the root directory of your Symfony project. It's calculated as
@@ -114,7 +81,7 @@ method to return the right project directory::
 Cache Directory
 ~~~~~~~~~~~~~~~
 
-**type**: ``string`` **default**: ``$this->rootDir/cache/$this->environment``
+**type**: ``string`` **default**: ``$this->projectDir/cache/$this->environment``
 
 This returns the path to the cache directory. To change it, override the
 :method:`Symfony\\Component\\HttpKernel\\Kernel::getCacheDir` method. Read
@@ -123,7 +90,7 @@ This returns the path to the cache directory. To change it, override the
 Log Directory
 ~~~~~~~~~~~~~
 
-**type**: ``string`` **default**: ``$this->rootDir/logs``
+**type**: ``string`` **default**: ``$this->projectDir/logs``
 
 This returns the path to the log directory. To change it, override the
 :method:`Symfony\\Component\\HttpKernel\\Kernel::getLogDir` method. Read