diff --git a/auth-server-password.md b/auth-server-password.md
index 2599473d..24d97280 100755
--- a/auth-server-password.md
+++ b/auth-server-password.md
@@ -22,6 +22,8 @@ $passwordGrant = new \League\OAuth2\Server\Grant\PasswordGrant();
 $passwordGrant->setVerifyCredentialsCallback(function ($username, $password) {
     // implement logic here to validate a username and password, return an ID if valid, otherwise return false
 });
+
+$server->addGrantType($passwordGrant);
 ~~~
 
 
@@ -37,7 +39,7 @@ $router->post('/access_token', function (Request $request) use ($server) {
         $response = $server->issueAccessToken();
         return new Response(
             json_encode($response),
-            200
+            200,
             [
                 'Content-type'  =>  'application/json',
                 'Cache-Control' =>  'no-store',
@@ -59,4 +61,4 @@ $router->post('/access_token', function (Request $request) use ($server) {
     }
 
 });
-~~~
\ No newline at end of file
+~~~
diff --git a/auth-server-which-grant.md b/auth-server-which-grant.md
index 263ffa0e..0d138654 100755
--- a/auth-server-which-grant.md
+++ b/auth-server-which-grant.md
@@ -90,7 +90,7 @@ This grant is suitable for trusted clients such as a service’s own mobile clie
 
 ~~~ php
 $clientCredentials = new League\OAuth2\Server\Grant\ClientCredentialsGrant();
-server->addGrantType($clientCredentials);
+$server->addGrantType($clientCredentials);
 ~~~
 
 This grant is similar to the resource owner credentials grant except only the client’s credentials are used to authenticate a request for an access token. Again this grant should only be allowed to be used by trusted clients.
@@ -112,4 +112,4 @@ The OAuth 2.0 specification also details a fifth grant which can be used to “r
 
 Authorisation servers which support this grant will also issue a “refresh token” when it returns an access token to a client. When the access token expires instead of sending the user back through the authorisation code grant the client can use to the refresh token to retrieve a new access token with the same permissions as the old one.
 
-A problem with the grant is that it means the client has to maintain state of each token and then either on a cron job keep access tokens up to date or when it tries to make a request and it fails then go and update the access token and repeat the request.
\ No newline at end of file
+A problem with the grant is that it means the client has to maintain state of each token and then either on a cron job keep access tokens up to date or when it tries to make a request and it fails then go and update the access token and repeat the request.