diff --git a/rss.go b/rss.go
index 11bbf9e..da6cce5 100644
--- a/rss.go
+++ b/rss.go
@@ -239,5 +239,5 @@ func (f *Feed) ToXML() (string, error) {
 		return "", fmt.Errorf("error XML encoding feed: %v", err)
 	}
 
-	return string(xml), nil
+	return `<?xml version="1.0" encoding="UTF-8"?>` + string(xml), nil
 }