diff --git a/plugin/src/main/org/apache/maven/plugin/PluginToTags.java b/plugin/src/main/org/apache/maven/plugin/PluginToTags.java
index a7657fa5..8ea61713 100644
--- a/plugin/src/main/org/apache/maven/plugin/PluginToTags.java
+++ b/plugin/src/main/org/apache/maven/plugin/PluginToTags.java
@@ -174,6 +174,7 @@ public class PluginToTags
         SAXBuilder builder = new SAXBuilder();
         Document doc = builder.build(new File(getPluginScript()));
         XPath xpath = XPath.newInstance("/project/define:taglib");
+        xpath.addNamespace( "define", "jelly:define" );
         List taglibElements = xpath.selectNodes(doc);
         List taglibs = new LinkedList();
         for (Iterator iter = taglibElements.iterator(); iter.hasNext();)