diff --git a/developer_manual/filesystem.rst b/developer_manual/filesystem.rst
index 0573c9721..d72894215 100644
--- a/developer_manual/filesystem.rst
+++ b/developer_manual/filesystem.rst
@@ -47,8 +47,10 @@ OC_Filesystem must be initiated before it can be used using the OC_Filesystem::i
 
 Example:
 
-``OC_Filesystem::init( '/' . $user . '/' . $root );
-OC_Filesystem::mkdir( 'test' );
-if ( OC_Filesystem::is_dir('test') ) { echo 'OC_Filesystem is being used correctly'; }``
+.. code-block:: php
+  
+  OC_Filesystem::init( '/' . $user . '/' . $root );
+  OC_Filesystem::mkdir( 'test' );
+  if ( OC_Filesystem::is_dir('test') ) { echo 'OC_Filesystem is being used correctly'; }``
 
-.. _singleton pattern: https://en.wikipedia.org/wiki/Singleton_pattern
+.. _singleton pattern: https://en.wikipedia.org/wiki/Singleton_pattern