Index: /trunk/src/org/openstreetmap/josm/gui/preferences/StyleSourceEditor.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/preferences/StyleSourceEditor.java	(revision 3473)
+++ /trunk/src/org/openstreetmap/josm/gui/preferences/StyleSourceEditor.java	(revision 3474)
@@ -762,4 +762,8 @@
             String lang = LanguageInfo.getLanguageCodeXML();
             try {
+                StyleSourceInfo i = new StyleSourceInfo("elemstyles.xml", "resource://data/elemstyles.xml");
+                i.shortdescription = tr("Internal style");
+                i.description = tr("Internal style to be used as base for runtime switchable overlay styles");
+                styles.add(i);
                 MirroredInputStream stream = new MirroredInputStream(url);
                 InputStreamReader r;