diff --git a/ipaacalib/java/src/ipaaca/IUConverter.java b/ipaacalib/java/src/ipaaca/IUConverter.java
index d2138d6945bafbaff9a797f3b5b9fee5412ef635..d03660f633f325e1a53e27b935a273a70298517b 100644
--- a/ipaacalib/java/src/ipaaca/IUConverter.java
+++ b/ipaacalib/java/src/ipaaca/IUConverter.java
@@ -1,10 +1,10 @@
 /*
  * This file is part of IPAACA, the
  *  "Incremental Processing Architecture
- *   for Artificial Conversational Agents".  
+ *   for Artificial Conversational Agents".
  *
  * Copyright (c) 2009-2013 Sociable Agents Group
- *                         CITEC, Bielefeld University   
+ *                         CITEC, Bielefeld University
  *
  * http://opensource.cit-ec.de/projects/ipaaca/
  * http://purl.org/net/ipaaca
@@ -21,7 +21,7 @@
  * You should have received a copy of the LGPL along with this
  * program. If not, go to http://www.gnu.org/licenses/lgpl.html
  * or write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  *
  * The development of this software was supported by the
  * Excellence Cluster EXC 277 Cognitive Interaction Technology.
@@ -55,7 +55,7 @@ import com.google.protobuf.InvalidProtocolBufferException;
 /**
  * Serializes AbstractIUs into protocolbuffer IUs and vice versa.
  * @author hvanwelbergen
- * 
+ *
  */
 public class IUConverter implements Converter<ByteBuffer>
 {
@@ -96,10 +96,11 @@ public class IUConverter implements Converter<ByteBuffer>
         IU iu = IU.newBuilder().setUid(iua.getUid()).setRevision(iua.getRevision()).setCategory(iua.getCategory())
                 .setOwnerName(iua.getOwnerName()).setCommitted(iua.isCommitted()).setAccessMode(accessMode)
                 .setReadOnly(iua.isReadOnly()).setPayloadType("STR").addAllPayload(payloadItems).addAllLinks(links).build();
-        return new WireContents<ByteBuffer>(ByteBuffer.wrap(iu.toByteArray()), "ipaaca-iu");
+        String wireFormat = (accessMode == IU.AccessMode.MESSAGE) ? "ipaaca-messageiu" : "ipaaca-iu";
+        return new WireContents<ByteBuffer>(ByteBuffer.wrap(iu.toByteArray()), wireFormat);
     }
 
-    
+
     @Override
     public UserData<?> deserialize(String wireSchema, ByteBuffer buffer) throws ConversionException
     {