Index: trunk/src/org/openstreetmap/josm/io/OsmServerReader.java
===================================================================
--- trunk/src/org/openstreetmap/josm/io/OsmServerReader.java	(revision 3020)
+++ trunk/src/org/openstreetmap/josm/io/OsmServerReader.java	(revision 3021)
@@ -55,5 +55,5 @@
             URL url = null;
             try {
-                url = new URL(urlStr);
+                url = new URL(urlStr.replace(" ", "%20"));
             } catch(MalformedURLException e) {
                 throw new OsmTransferException(e);