--- a/Lib/IMPL/DOM/Schema/Property.pm	Fri Oct 12 02:08:51 2012 +0400
+++ b/Lib/IMPL/DOM/Schema/Property.pm	Mon Oct 15 04:23:01 2012 +0400
@@ -47,10 +47,10 @@
     } elsif($this->minOccur) {
         # we don't have a value but it's a mandatory property
         return new IMPL::DOM::Schema::ValidationError(
-            Message => $this->messageRequired,
-            Node => $node,
-            Schema => $this,
-            Source => $ctx && $ctx->{Source} || $this
+            message => $this->messageRequired,
+            node => $node,
+            schema => $this,
+            source => $ctx && $ctx->{Source} || $this
         );
     }
     return ();