diff --git a/src/Providers/Anthropic/Maps/MessageMap.php b/src/Providers/Anthropic/Maps/MessageMap.php
index ac2ddc2..397f0d9 100644
--- a/src/Providers/Anthropic/Maps/MessageMap.php
+++ b/src/Providers/Anthropic/Maps/MessageMap.php
@@ -25,13 +25,12 @@ public static function map(array $messages): array
     {
         return array_values(array_map(
             fn (Message $message): array => self::mapMessage($message),
-            array_filter($messages, fn (Message $message): bool => !$message instanceof SystemMessage)
+            array_filter($messages, fn (Message $message): bool => ! $message instanceof SystemMessage)
         ));
     }
-    
+
     /**
      * @param  array<int, Message>  $messages
-     * @param null|string    $systemPrompt
      * @return array<int, mixed>
      */
     public static function mapSystemMessages(array $messages, ?string $systemPrompt): array
diff --git a/tests/Providers/Anthropic/MessageMapTest.php b/tests/Providers/Anthropic/MessageMapTest.php
index 7ca43f3..af5e6af 100644
--- a/tests/Providers/Anthropic/MessageMapTest.php
+++ b/tests/Providers/Anthropic/MessageMapTest.php
@@ -28,7 +28,7 @@
 it('filters system messages out when calling map', function (): void {
     expect(MessageMap::map([
         new UserMessage('Who are you?'),
-        new SystemMessage('I am Groot.')
+        new SystemMessage('I am Groot.'),
     ]))->toBe([[
         'role' => 'user',
         'content' => [
@@ -159,6 +159,6 @@
         [
             'type' => 'text',
             'text' => 'Who are you?',
-        ]
+        ],
     ]);
 });