diff --git a/How-To-Create-A-Ripper-for-HTML-websites.md b/How-To-Create-A-Ripper-for-HTML-websites.md
index a0ca1bc..9e08136 100644
--- a/How-To-Create-A-Ripper-for-HTML-websites.md
+++ b/How-To-Create-A-Ripper-for-HTML-websites.md
@@ -126,7 +126,7 @@ Throws: `IOException` if no next page can be retrieved.
 
 ---
 
-#### String normalizeUrl(String url)
+#### String normalizeUrl(String url) // Optional!
 
 Returns: The url that will be either written to or checked against the url history