Don't use error suppression on ini_get() either
diff --git a/system/core/Output.php b/system/core/Output.php
index ef56a97..e8c1c39 100644
--- a/system/core/Output.php
+++ b/system/core/Output.php
@@ -120,7 +120,7 @@
 	 */
 	public function __construct()
 	{
-		$this->_zlib_oc = (bool) @ini_get('zlib.output_compression');
+		$this->_zlib_oc = (bool) ini_get('zlib.output_compression');
 		$this->_compress_output = (
 			$this->_zlib_oc === FALSE
 			&& config_item('compress_output') === TRUE