diff --git a/tests/FormatTest.php b/tests/FormatTest.php
index 2b46aa6..3ed622a 100755
--- a/tests/FormatTest.php
+++ b/tests/FormatTest.php
@@ -44,20 +44,4 @@ public function testUserGeneratedHtml5Message()
             'entity' => 'cid:',
         ], $message->getBody());
     }
-
-    /**
-     * @test
-     */
-    public function testMixedAndCustomEmbedders()
-    {
-        App::bind('mail-auto-embed.custom', CustomEmbedder::class);
-
-        $message = $this->handleBeforeSendPerformedEvent('formats/html5-custom-embeds.html', self::HANDLE_CONFIG);
-
-        $this->assertEmailImageTags([
-            'default' => 'cid:',
-            'custom embedder' => 'custom:',
-            'invalid embedder' => 'cid:',
-        ], $message->getBody());
-    }
 }
diff --git a/tests/fixtures/CustomEmbedder.php b/tests/fixtures/CustomEmbedder.php
deleted file mode 100644
index 3ce8f62..0000000
--- a/tests/fixtures/CustomEmbedder.php
+++ /dev/null
@@ -1,16 +0,0 @@
-<?php
-
-namespace Eduardokum\LaravelMailAutoEmbed\Tests\fixtures;
-
-use Eduardokum\LaravelMailAutoEmbed\Embedder\AttachmentEmbedder;
-
-class CustomEmbedder extends AttachmentEmbedder
-{
-    /**
-     * @param  string  $url
-     */
-    public function fromUrl($url)
-    {
-        return "custom:{$url}";
-    }
-}