diff --git a/admin_manual/configuration/configuration_preview.rst b/admin_manual/configuration/configuration_preview.rst
index 0213db9eb..b21710953 100644
--- a/admin_manual/configuration/configuration_preview.rst
+++ b/admin_manual/configuration/configuration_preview.rst
@@ -68,7 +68,6 @@ There are two config options to set the maximum size of a preview.
     'preview_max_x' => null,
     'preview_max_y' => null,
 
-.. code-block:: php
 By default, both config options are set to null. 'Null' is equal to no limit.
 Numeric values represent the size in pixel. The following code limits previews
 to a maximum size of 100px by 100px:
@@ -79,7 +78,6 @@ to a maximum size of 100px by 100px:
     'preview_max_x' => 100,
     'preview_max_y' => 100,
 
-.. code-block:: php
 'preview_max_x' represents the x-axis and 'preview_max_y' represents the y-axis.
 
 Maximum scale factor: