diff --git a/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/VitroHttpServlet.java b/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/VitroHttpServlet.java
index 183296b93..aad5fc1f5 100644
--- a/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/VitroHttpServlet.java
+++ b/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/VitroHttpServlet.java
@@ -28,6 +28,9 @@ public class VitroHttpServlet extends HttpServlet
     private WebappDaoFactory myAssertionsWebappDaoFactory = null;
     private WebappDaoFactory myDeductionsWebappDaoFactory = null;
 
+    public final static String RDFXML_MIMETYPE ="application/rdf+xml";
+    public final static String N3_MIMETYPE ="text/rdf+n3"; //unofficial and unregistered      
+    
     /**
      * Setup the auth flag, portal flag and portal bean objects.
      * Put them in the request attributes.