diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/shim/packet/Header.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/shim/packet/Header.java
index dd53595db..19f45213f 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/shim/packet/Header.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/shim/packet/Header.java
@@ -21,7 +21,7 @@ import org.jivesoftware.smack.packet.NamedElement;
 import org.jivesoftware.smack.util.XmlStringBuilder;
 
 /**
- * Represents a <b>Header</b> entry as specified by the <a href="http://xmpp.org/extensions/xep-031.html">Stanza Headers and Internet Metadata (SHIM)</a>.
+ * Represents a <b>Header</b> entry as specified by the <a href="http://xmpp.org/extensions/xep-0131.html">Stanza Headers and Internet Metadata (SHIM)</a>.
 
  * @author Robin Collier
  */