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
 
diff --git a/developer_manual/design/html.rst b/developer_manual/design/html.rst
index 51c8add6a..df8f26d51 100644
--- a/developer_manual/design/html.rst
+++ b/developer_manual/design/html.rst
@@ -26,9 +26,9 @@ Please use the html5 ``progress`` element.
 Checkboxes and radios
 ======================
 
-As default html5 checkboxes & radios are **not** customisable, we created an override using label and ``::after`` elements.
+As default html5 checkboxes & radios are **not** customizable, we created an override using label and ``::after`` elements.
 
-There is 2 colors:
+There are 2 colors:
 
 * Default themed with the primary color.
 * White colored.