Index: trunk/src/org/openstreetmap/josm/io/OsmWriter.java
===================================================================
--- trunk/src/org/openstreetmap/josm/io/OsmWriter.java	(revision 4104)
+++ trunk/src/org/openstreetmap/josm/io/OsmWriter.java	(revision 4105)
@@ -151,5 +151,5 @@
             for (int i=0; i<e.getMembersCount(); ++i) {
                 out.print("    <member type='");
-                out.print(e.getMemberType(i));
+                out.print(e.getMemberType(i).getAPIName());
                 out.println("' ref='"+e.getMemberId(i)+"' role='" +
                         XmlWriter.encode(e.getRole(i)) + "' />");