diff --git a/src/Module/Api/Mastodon/Accounts/UpdateCredentials.php b/src/Module/Api/Mastodon/Accounts/UpdateCredentials.php
index d609cdaae..5051aec4e 100644
--- a/src/Module/Api/Mastodon/Accounts/UpdateCredentials.php
+++ b/src/Module/Api/Mastodon/Accounts/UpdateCredentials.php
@@ -21,6 +21,7 @@
 
 namespace Friendica\Module\Api\Mastodon\Accounts;
 
+use Friendica\App\Router;
 use Friendica\Core\Logger;
 use Friendica\Module\BaseApi;
 use Friendica\Util\HTTPInputData;
@@ -39,6 +40,6 @@ class UpdateCredentials extends BaseApi
 
 		Logger::info('Patch data', ['data' => $data]);
 
-		self::unsupported('patch');
+		self::unsupported(Router::PATCH);
 	}
 }
diff --git a/src/Module/Api/Mastodon/Filters.php b/src/Module/Api/Mastodon/Filters.php
index 6c1506647..2b505e0f2 100644
--- a/src/Module/Api/Mastodon/Filters.php
+++ b/src/Module/Api/Mastodon/Filters.php
@@ -21,6 +21,7 @@
 
 namespace Friendica\Module\Api\Mastodon;
 
+use Friendica\App\Router;
 use Friendica\Core\System;
 use Friendica\Module\BaseApi;
 
@@ -33,7 +34,7 @@ class Filters extends BaseApi
 	{
 		self::checkAllowedScope(self::SCOPE_WRITE);
 
-		self::unsupported('post');
+		self::unsupported(Router::POST);
 	}
 
 	/**
diff --git a/src/Module/Api/Mastodon/Lists/Accounts.php b/src/Module/Api/Mastodon/Lists/Accounts.php
index 6e10ad6bf..013a9f4aa 100644
--- a/src/Module/Api/Mastodon/Lists/Accounts.php
+++ b/src/Module/Api/Mastodon/Lists/Accounts.php
@@ -21,6 +21,7 @@
 
 namespace Friendica\Module\Api\Mastodon\Lists;
 
+use Friendica\App\Router;
 use Friendica\Core\System;
 use Friendica\Database\DBA;
 use Friendica\DI;
@@ -35,12 +36,12 @@ class Accounts extends BaseApi
 {
 	public static function delete(array $parameters = [])
 	{
-		self::unsupported('delete');
+		self::unsupported(Router::DELETE);
 	}
 
 	public static function post(array $parameters = [])
 	{
-		self::unsupported('post');
+		self::unsupported(Router::POST);
 	}
 
 	/**
@@ -74,7 +75,7 @@ class Accounts extends BaseApi
 		if ($request['limit'] != 0) {
 			$params['limit'] = min($request['limit'], 40);
 		}
-	
+
 		$condition = ['gid' => $id];
 
 		if (!empty($request['max_id'])) {
diff --git a/src/Module/Api/Mastodon/Markers.php b/src/Module/Api/Mastodon/Markers.php
index a3a3879e0..50c086499 100644
--- a/src/Module/Api/Mastodon/Markers.php
+++ b/src/Module/Api/Mastodon/Markers.php
@@ -21,6 +21,7 @@
 
 namespace Friendica\Module\Api\Mastodon;
 
+use Friendica\App\Router;
 use Friendica\Core\System;
 use Friendica\Module\BaseApi;
 
@@ -33,7 +34,7 @@ class Markers extends BaseApi
 	{
 		self::checkAllowedScope(self::SCOPE_WRITE);
 
-		self::unsupported('post');
+		self::unsupported(Router::POST);
 	}
 
 	/**
diff --git a/src/Module/Api/Mastodon/Unimplemented.php b/src/Module/Api/Mastodon/Unimplemented.php
index fa9618818..035b6d2c9 100644
--- a/src/Module/Api/Mastodon/Unimplemented.php
+++ b/src/Module/Api/Mastodon/Unimplemented.php
@@ -21,6 +21,7 @@
 
 namespace Friendica\Module\Api\Mastodon;
 
+use Friendica\App\Router;
 use Friendica\Module\BaseApi;
 
 /**
@@ -34,7 +35,7 @@ class Unimplemented extends BaseApi
 	 */
 	public static function delete(array $parameters = [])
 	{
-		self::unsupported('delete');
+		self::unsupported(Router::DELETE);
 	}
 
 	/**
@@ -43,7 +44,7 @@ class Unimplemented extends BaseApi
 	 */
 	public static function patch(array $parameters = [])
 	{
-		self::unsupported('patch');
+		self::unsupported(Router::PATCH);
 	}
 
 	/**
@@ -52,7 +53,7 @@ class Unimplemented extends BaseApi
 	 */
 	public static function post(array $parameters = [])
 	{
-		self::unsupported('post');
+		self::unsupported(Router::POST);
 	}
 
 	/**
@@ -61,7 +62,7 @@ class Unimplemented extends BaseApi
 	 */
 	public static function put(array $parameters = [])
 	{
-		self::unsupported('put');
+		self::unsupported(Router::PUT);
 	}
 
 	/**
@@ -70,6 +71,6 @@ class Unimplemented extends BaseApi
 	 */
 	public static function rawContent(array $parameters = [])
 	{
-		self::unsupported('get');
+		self::unsupported(Router::GET);
 	}
 }