Index: trunk/src/org/openstreetmap/josm/io/remotecontrol/RequestProcessor.java
===================================================================
--- trunk/src/org/openstreetmap/josm/io/remotecontrol/RequestProcessor.java	(revision 16585)
+++ trunk/src/org/openstreetmap/josm/io/remotecontrol/RequestProcessor.java	(revision 16586)
@@ -65,8 +65,10 @@
      * changes.
      */
-    public static final String PROTOCOLVERSION = "{\"protocolversion\": {\"major\": " +
-        RemoteControl.protocolMajorVersion + ", \"minor\": " +
-        RemoteControl.protocolMinorVersion +
-        "}, \"application\": \"JOSM RemoteControl\"}";
+    public static final String PROTOCOLVERSION = Json.createObjectBuilder()
+            .add("protocolversion", Json.createObjectBuilder()
+                    .add("major", RemoteControl.protocolMajorVersion)
+                    .add("minor", RemoteControl.protocolMinorVersion))
+            .add("application", "JOSM RemoteControl")
+            .build().toString();
 
     /** The socket this processor listens on */