diff --git a/docs/en/designers/language-custom-functions/language-function-mailto.xml b/docs/en/designers/language-custom-functions/language-function-mailto.xml
index f2de905c..40cfdab1 100644
--- a/docs/en/designers/language-custom-functions/language-function-mailto.xml
+++ b/docs/en/designers/language-custom-functions/language-function-mailto.xml
@@ -122,7 +122,7 @@
 {mailto address="me@example.com" encode="hex"}
 <a href="mailto:%6d%65.. snipped..3%6f%6d">&#x6d;&..snipped...#x6f;&#x6d;</a>
 
-mailto address="me@example.com" subject="Hello to you!"}
+{mailto address="me@example.com" subject="Hello to you!"}
 <a href="mailto:me@example.com?subject=Hello%20to%20you%21" >me@example.com</a>
 
 {mailto address="me@example.com" cc="you@example.com,they@example.com"}