diff --git a/src/Tracy/Helpers.php b/src/Tracy/Helpers.php
index 923050184..6fdc7ab96 100644
--- a/src/Tracy/Helpers.php
+++ b/src/Tracy/Helpers.php
@@ -536,6 +536,7 @@ function ($match) use (&$last) {
 	/** @internal */
 	public static function minifyCss(string $s): string
 	{
+		return $s;
 		$last = '';
 		return preg_replace_callback(
 			<<<'XX'