diff --git a/doc/user_guide.md b/doc/user_guide.md
index 2a4311c..8e4f806 100644
--- a/doc/user_guide.md
+++ b/doc/user_guide.md
@@ -432,7 +432,7 @@ A regular expression begins and ends with a `/` character.
 Example:
 
 ```
-/#.*$/
+/#.*/
 ```
 
 Regular expressions can include many special characters: