diff --git a/inc/reader.php b/inc/reader.php
index 1e9c0ab..5fb8ec4 100644
--- a/inc/reader.php
+++ b/inc/reader.php
@@ -251,7 +251,7 @@ class Reader extends PhpObject
 		$sCode = preg_replace($sPattern, '>$1<span class="number">$4</span>$5', $sCode);
 		
 		//Add Comments
-		$sCode = preg_replace(array_keys($asCommentLines), array_values($asCommentLines), $sCode);
+		if(!empty($asCommentLines)) $sCode = preg_replace(array_keys($asCommentLines), array_values($asCommentLines), $sCode);
 		
 		return $sCode;
 	}