Index: maven-core/src/main/java/org/apache/maven/plugin/DefaultPluginManager.java
===================================================================
--- maven-core/src/main/java/org/apache/maven/plugin/DefaultPluginManager.java	(revision 677361)
+++ maven-core/src/main/java/org/apache/maven/plugin/DefaultPluginManager.java	(working copy)
@@ -301,7 +301,9 @@
             try
             {
                 child.getContainerRealm().importFrom( "plexus.core", "org.codehaus.plexus.util.xml.Xpp3Dom" );
-                child.getContainerRealm().importFrom( "plexus.core", "org.codehaus.plexus.util.xml.pull" );
+                child.getContainerRealm().importFrom( "plexus.core", "org.codehaus.plexus.util.xml.pull.XmlPullParser" );
+                child.getContainerRealm().importFrom( "plexus.core", "org.codehaus.plexus.util.xml.pull.XmlPullParserException" );
+                child.getContainerRealm().importFrom( "plexus.core", "org.codehaus.plexus.util.xml.pull.XmlSerializer" );
 
                 // MNG-2878
                 child.getContainerRealm().importFrom( "plexus.core", "/default-report.xml" );