diff --git a/_include.php b/_include.php
index 74d3dedd0..4061ad00b 100644
--- a/_include.php
+++ b/_include.php
@@ -2,7 +2,9 @@
 
 // Name this file as "include.php" to enable it.
 
-//\header('Strict-Transport-Security: max-age=31536000');
+//header('Strict-Transport-Security: max-age=31536000');
+
+//define('USE_GZIP', true); // to use gzip encoded output
 
 /**
  * @return string
diff --git a/rainloop/v/0.0.0/include.php b/rainloop/v/0.0.0/include.php
index a6ad69abb..458ffed61 100644
--- a/rainloop/v/0.0.0/include.php
+++ b/rainloop/v/0.0.0/include.php
@@ -222,7 +222,7 @@
 		}
 
 		// See https://github.com/kjdev/php-ext-brotli
-		if (!ini_get('zlib.output_compression', 0) && !ini_get('brotli.output_compression', 0)) {
+		if (defined('USE_GZIP') && !ini_get('zlib.output_compression', 0) && !ini_get('brotli.output_compression', 0)) {
 			ob_start('ob_gzhandler');
 		}