Index: /trunk/src/org/openstreetmap/josm/gui/download/DownloadDialog.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/gui/download/DownloadDialog.java	(revision 15364)
+++ /trunk/src/org/openstreetmap/josm/gui/download/DownloadDialog.java	(revision 15365)
@@ -435,5 +435,5 @@
     public void setVisible(boolean visible) {
         if (visible) {
-            btnDownloadNewLayer.setVisible(
+            btnDownloadNewLayer.setEnabled(
                     !MainApplication.getLayerManager().getLayersOfType(OsmDataLayer.class).isEmpty());
             new WindowGeometry(