Index: archetype-plugin/src/main/java/org/apache/maven/archetype/ui/DefaultArchetypeFactory.java
===================================================================
--- archetype-plugin/src/main/java/org/apache/maven/archetype/ui/DefaultArchetypeFactory.java	(revision 689969)
+++ archetype-plugin/src/main/java/org/apache/maven/archetype/ui/DefaultArchetypeFactory.java	(working copy)
@@ -153,10 +153,10 @@
             configuration.addRequiredProperty( requiredProperty.getKey() );
             getLogger().debug( "Adding requiredProperty " + requiredProperty.getKey() );
 
-            if( null != properties.getProperty( requiredProperty.getKey(), requiredProperty.getDefaultValue() ) )
+            if( properties.containsKey( requiredProperty.getKey() ) )
             {
                 configuration.setProperty( requiredProperty.getKey(),
-                    properties.getProperty( requiredProperty.getKey(), requiredProperty.getDefaultValue() ) );
+                    properties.getProperty( requiredProperty.getKey() ) );
                 getLogger().debug( "Setting property " + requiredProperty.getKey() + "="
                     + configuration.getProperty( requiredProperty.getKey() ) );
             }