diff --git a/system/core/Output.php b/system/core/Output.php
index b5955c0..7a5fb66 100644
--- a/system/core/Output.php
+++ b/system/core/Output.php
@@ -847,7 +847,7 @@
 		}
 
 		// Remove CSS comments
-		$output = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/(?!.*?("|\'))!i', '', $output);
+		$output = preg_replace('!/\*([^/][^*]*\*)*/(?!.+?["\'])!i', '', $output);
 
 		// Remove Javascript inline comments
 		if ($has_tags === TRUE && strpos(strtolower($open_tag), 'script') !== FALSE)