diff --git a/tests/_support/Commands/CommandsTestStreamFilter.php b/tests/_support/Commands/CommandsTestStreamFilter.php
deleted file mode 100644
index 599075ba1..000000000
--- a/tests/_support/Commands/CommandsTestStreamFilter.php
+++ /dev/null
@@ -1,18 +0,0 @@
-<?php namespace CodeIgniter\Commands;
-
-class CommandsTestStreamFilter extends \php_user_filter
-{
-	public static $buffer = '';
-
-	public function filter($in, $out, &$consumed, $closing)
-	{
-		while ($bucket = stream_bucket_make_writeable($in))
-		{
-			self::$buffer .= $bucket->data;
-			$consumed     += $bucket->datalen;
-		}
-		return PSFS_PASS_ON;
-	}
-}
-
-stream_filter_register('CommandsTestStreamFilter', 'CodeIgniter\Commands\CommandsTestStreamFilter');