diff --git a/src/Monolog/Handler/SlackWebhookHandler.php b/src/Monolog/Handler/SlackWebhookHandler.php
index 6466ba3af..c69237aeb 100644
--- a/src/Monolog/Handler/SlackWebhookHandler.php
+++ b/src/Monolog/Handler/SlackWebhookHandler.php
@@ -104,9 +104,6 @@ protected function write(LogRecord $record): void
             CURLOPT_HTTPHEADER => ['Content-type: application/json'],
             CURLOPT_POSTFIELDS => $postString,
         ];
-        if (defined('CURLOPT_SAFE_UPLOAD')) {
-            $options[CURLOPT_SAFE_UPLOAD] = true;
-        }
 
         curl_setopt_array($ch, $options);