diff --git a/src/Symfony/Component/Finder/Shell/Command.php b/src/Symfony/Component/Finder/Shell/Command.php
index 14111797ed..0c4a3118cf 100644
--- a/src/Symfony/Component/Finder/Shell/Command.php
+++ b/src/Symfony/Component/Finder/Shell/Command.php
@@ -198,7 +198,7 @@ class Command
     public function end()
     {
         if (null === $this->parent) {
-            throw new \RuntimeException('Calling end on root command dont makes sense.');
+            throw new \RuntimeException('Calling end on root command doesn\'t make sense.');
         }
 
         return $this->parent;
diff --git a/src/Symfony/Component/Form/Form.php b/src/Symfony/Component/Form/Form.php
index ad44f15d35..eb93637877 100644
--- a/src/Symfony/Component/Form/Form.php
+++ b/src/Symfony/Component/Form/Form.php
@@ -542,7 +542,7 @@ class Form implements \IteratorAggregate, FormInterface
         }
 
         // Check whether the form is compound.
-        // This check is preferrable over checking the number of children,
+        // This check is preferable over checking the number of children,
         // since forms without children may also be compound.
         // (think of empty collection forms)
         if ($this->config->getCompound()) {
@@ -837,7 +837,7 @@ class Form implements \IteratorAggregate, FormInterface
      */
     public function getChildren()
     {
-        trigger_error('getChilren() is deprecated since version 2.1 and will be removed in 2.3. Use all() instead.', E_USER_DEPRECATED);
+        trigger_error('getChildren() is deprecated since version 2.1 and will be removed in 2.3. Use all() instead.', E_USER_DEPRECATED);
 
         return $this->all();
     }
diff --git a/src/Symfony/Component/HttpFoundation/Request.php b/src/Symfony/Component/HttpFoundation/Request.php
index 3b5d1448a0..e145a7e698 100644
--- a/src/Symfony/Component/HttpFoundation/Request.php
+++ b/src/Symfony/Component/HttpFoundation/Request.php
@@ -572,7 +572,7 @@ class Request
      * Be warned that enabling this feature might lead to CSRF issues in your code.
      * Check that you are using CSRF tokens when required.
      *
-     * The HTTP method can only be overriden when the real HTTP method is POST.
+     * The HTTP method can only be overridden when the real HTTP method is POST.
      */
     public static function enableHttpMethodParameterOverride()
     {
@@ -722,7 +722,7 @@ class Request
      *
      *  * http://localhost/mysite              returns an empty string
      *  * http://localhost/mysite/about        returns '/about'
-     *  * htpp://localhost/mysite/enco%20ded   returns '/enco%20ded'
+     *  * http://localhost/mysite/enco%20ded   returns '/enco%20ded'
      *  * http://localhost/mysite/about?var=1  returns '/about'
      *
      * @return string The raw path (i.e. not urldecoded)
diff --git a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcachedSessionHandlerTest.php b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcachedSessionHandlerTest.php
index 6f158cd1b7..7fbfd0a479 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcachedSessionHandlerTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcachedSessionHandlerTest.php
@@ -13,7 +13,7 @@ namespace Symfony\Component\HttpFoundation\Tests\Session\Storage\Handler;
 
 use Symfony\Component\HttpFoundation\Session\Storage\Handler\MemcachedSessionHandler;
 
-class MemcacheddSessionHandlerTest extends \PHPUnit_Framework_TestCase
+class MemcachedSessionHandlerTest extends \PHPUnit_Framework_TestCase
 {
     const PREFIX = 'prefix_';
     const TTL = 1000;