diff --git a/Examples-Blog/Custom Functions/Part 1 - Using Optional Parameters.pq b/Examples-Blog/Custom Functions/Part 1 - Using Optional Parameters.pq
index bc8c48a..bb8926f 100644
--- a/Examples-Blog/Custom Functions/Part 1 - Using Optional Parameters.pq	
+++ b/Examples-Blog/Custom Functions/Part 1 - Using Optional Parameters.pq	
@@ -2,7 +2,7 @@ let
     /*
     About: Compare different optional parameter types
     This is from the post: https://ninmonkeys.com/blog/2024/06/05/power-query-functions-part1-using-optional-parameters
-    source:
+    source: <https://github.com/ninmonkey/Ninmonkey.PowerQueryLib/blob/bf4e1d63b8bb9ffe3b3e4df0d687435bb88be30d/Examples-Blog/Custom%20Functions/Part%201%20-%20Using%20Optional%20Parameters.pq>
 
     lets call Text.Combine() to test declaring optional parameters