diff --git a/README.md b/README.md
index 56d4711..2b2fe78 100644
--- a/README.md
+++ b/README.md
@@ -226,7 +226,7 @@ func main() {
 The output of this example looks like this. It only shows the second entry.
 
 ```xml
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <feed xmlns="http://www.w3.org/2005/Atom">
     <id>urn:uuid:ae89d343-b535-447d-ac14-4b80d3e02a2f</id>
     <title type="text">Example Feed</title>