diff --git a/docbook/auth-server-docs/reference/en/en-US/modules/javascript-adapter.xml b/docbook/auth-server-docs/reference/en/en-US/modules/javascript-adapter.xml
index 33d62dc..2036afb 100755
--- a/docbook/auth-server-docs/reference/en/en-US/modules/javascript-adapter.xml
+++ b/docbook/auth-server-docs/reference/en/en-US/modules/javascript-adapter.xml
@@ -210,6 +210,7 @@ new Keycloak({ url: 'http://localhost/auth', realm: 'myrealm', clientId: 'myApp'
<listitem>prompt - can be set to 'none' to check if the user is logged in already (if not logged in, a login form is not displayed)</listitem>
<listitem>loginHint - used to pre-fill the username/email field on the login form</listitem>
<listitem>action - if value is 'register' then user is redirected to registration page, otherwise to login page</listitem>
+ <listitem>locale - specifies the desired locale for the UI</listitem>
</itemizedlist>
</para>
</simplesect>
