diff --git a/admin_manual/configuration_server/config_sample_php_parameters.rst b/admin_manual/configuration_server/config_sample_php_parameters.rst
index 9848ca0a7..2b3288c72 100644
--- a/admin_manual/configuration_server/config_sample_php_parameters.rst
+++ b/admin_manual/configuration_server/config_sample_php_parameters.rst
@@ -989,21 +989,21 @@ Defaults to ``true``
 
 ::
 
-	'preview_max_x' => 2048,
+	'preview_max_x' => 4096,
 
 The maximum width, in pixels, of a preview. A value of ``null`` means there
 is no limit.
 
-Defaults to ``2048``
+Defaults to ``4096``
 
 ::
 
-	'preview_max_y' => 2048,
+	'preview_max_y' => 4096,
 
 The maximum height, in pixels, of a preview. A value of ``null`` means there
 is no limit.
 
-Defaults to ``2048``
+Defaults to ``4096``
 
 ::