diff --git a/Web/Presenters/CaptchaPresenter.php b/Web/Presenters/CaptchaPresenter.php
index 31864d0..3451b95 100644
--- a/Web/Presenters/CaptchaPresenter.php
+++ b/Web/Presenters/CaptchaPresenter.php
@@ -14,7 +14,7 @@ class CaptchaPresenter extends SimplePresenter
         header("Pragma: no-cache");
         header("Expires: Wed, 12 Feb 2003 00:00:00 GMT");
         header("Cache-Control: no-cache, no-store, no-transform, must-revalidate");
-        $image->send(Image::WEBP, 32);
+        $image->send(Image::JPEG);
         exit;
     }
 }