diff --git a/snappymail/v/0.0.0/app/libraries/snappymail/integrity.php b/snappymail/v/0.0.0/app/libraries/snappymail/integrity.php
index e6d25e6bd..145c21929 100644
--- a/snappymail/v/0.0.0/app/libraries/snappymail/integrity.php
+++ b/snappymail/v/0.0.0/app/libraries/snappymail/integrity.php
@@ -57,6 +57,7 @@ abstract class Integrity
 */
 			echo "<h3>gzip encoded</h3>";
 			$response = $HTTP->doRequest('HEAD', $uri . $file . '.gz');
+//			$response = $HTTP->doRequest('HEAD', $uri . $file, null, ['Accept-Encoding: gzip']);
 			echo '<details><summary>Status: ' . $response->status . '</summary><pre>' . \print_r($response->headers, 1) . '</pre></details>';
 			$size = \filesize(APP_VERSION_ROOT_PATH.$file . '.gz');
 			if ($size == intval($response->getHeader('content-length'))) {
@@ -71,7 +72,8 @@ abstract class Integrity
 			}
 
 			echo "<h3>brotli encoded</h3>";
-			$response = $HTTP->doRequest('HEAD', $uri . $file . '.br');
+			$response = $HTTP->doRequest('HEAD', $uri . $file, null, ['Accept-Encoding: br']);
+//			$response = $HTTP->doRequest('HEAD', $uri . $file . '.br');
 			echo '<details><summary>Status: ' . $response->status . '</summary><pre>' . \print_r($response->headers, 1) . '</pre></details>';
 			$size = \filesize(APP_VERSION_ROOT_PATH.$file . '.br');
 			if ($size == intval($response->getHeader('content-length'))) {