Index: trunk/src/org/openstreetmap/josm/gui/mappaint/MapPaintStyles.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/mappaint/MapPaintStyles.java	(revision 3852)
+++ trunk/src/org/openstreetmap/josm/gui/mappaint/MapPaintStyles.java	(revision 3853)
@@ -92,4 +92,5 @@
                 if (zip != null) {
                     style = new XmlStyleSource(entry);
+                    styles.add(style);
                     continue;
                 }
@@ -97,4 +98,5 @@
                 if (zip != null) {
                     style = new MapCSSStyleSource(entry);
+                    styles.add(style);
                     continue;
                 }