diff --git a/src/main/org/apache/tools/ant/AntClassLoader.java b/src/main/org/apache/tools/ant/AntClassLoader.java
index 4c1ac64c9..1beba1b2f 100644
--- a/src/main/org/apache/tools/ant/AntClassLoader.java
+++ b/src/main/org/apache/tools/ant/AntClassLoader.java
@@ -324,6 +324,7 @@ public class AntClassLoader extends ClassLoader implements BuildListener {
         addSystemPackageRoot("java");
         addSystemPackageRoot("javax");
         addSystemPackageRoot("org.xml.sax");
+        addSystemPackageRoot("org.w3c.dom");
         addSystemPackageRoot("sun.reflect");
     }