diff --git a/components/form.rst b/components/form.rst
index 784d948cf1f..b79f4aa3987 100644
--- a/components/form.rst
+++ b/components/form.rst
@@ -479,8 +479,8 @@ builder:
                 );
 
                 $form = $this->createFormBuilder($defaults)
-		    ->add('task', TextType::class)
-		    ->add('dueDate', DateType::class)
+                    ->add('task', TextType::class)
+                    ->add('dueDate', DateType::class)
                     ->getForm();
 
                 // ...
@@ -623,8 +623,8 @@ method:
             public function newAction(Request $request)
             {
                 $form = $this->createFormBuilder()
-		    ->add('task', TextType::class)
-		    ->add('dueDate', DateType::class)
+                    ->add('task', TextType::class)
+                    ->add('dueDate', DateType::class)
                     ->getForm();
 
                 $form->handleRequest($request);
@@ -701,10 +701,10 @@ option when building each field:
             public function newAction(Request $request)
             {
                 $form = $this->createFormBuilder()
-		    ->add('task', TextType::class, array(
+                    ->add('task', TextType::class, array(
                         'constraints' => new NotBlank(),
                     ))
-		    ->add('dueDate', DateType::class, array(
+                    ->add('dueDate', DateType::class, array(
                         'constraints' => array(
                             new NotBlank(),
                             new Type(\DateTime::class),
diff --git a/serializer.rst b/serializer.rst
index 4cde59105b5..3cd1d98821e 100644
--- a/serializer.rst
+++ b/serializer.rst
@@ -46,11 +46,11 @@ it in your configuration:
                 http://symfony.com/schema/dic/symfony/symfony-1.0.xsd">
             <framework:config>
                 <!-- ... -->
-		<framework:serializer enable-annotations="true" />
-		<!--
-		Alternatively, if you don't want to use annotations
-		<framework:serializer enabled="true" />
-		-->
+                <framework:serializer enable-annotations="true" />
+                <!--
+                Alternatively, if you don't want to use annotations
+                <framework:serializer enabled="true" />
+                -->
             </framework:config>
         </container>