diff --git a/developer_manual/core/configfile.rst b/developer_manual/core/configfile.rst
index fefa80a74..8e84d8433 100644
--- a/developer_manual/core/configfile.rst
+++ b/developer_manual/core/configfile.rst
@@ -113,7 +113,7 @@ App config
 Using alternative app directories
 ---------------------------------
 
-Nextcloud can be set to use a custom app directory in /config/config.php. Customise the following code and add it to your config file:
+Nextcloud can be set to use a custom app directory in /config/config.php. Customize the following code and add it to your config file:
 
 .. code-block:: php