diff --git a/src/main/org/apache/tools/ant/IntrospectionHelper.java b/src/main/org/apache/tools/ant/IntrospectionHelper.java
index a89d38835..b7662afd6 100644
--- a/src/main/org/apache/tools/ant/IntrospectionHelper.java
+++ b/src/main/org/apache/tools/ant/IntrospectionHelper.java
@@ -659,7 +659,8 @@ public final class IntrospectionHelper implements BuildListener {
         }
         if (nc == null && parent instanceof DynamicConfigurator) {
             DynamicConfigurator dc = (DynamicConfigurator) parent;
-            final Object nestedElement = dc.createDynamicElement(elementName);
+            final Object nestedElement =
+                dc.createDynamicElement(name.toLowerCase(Locale.US));
             if (nestedElement != null) {
                 nc = new NestedCreator() {
                     public boolean isPolyMorphic() {