Index: /applications/editors/josm/plugins/wmsplugin/src/wmsplugin/WMSImage.java
===================================================================
--- /applications/editors/josm/plugins/wmsplugin/src/wmsplugin/WMSImage.java	(revision 5244)
+++ /applications/editors/josm/plugins/wmsplugin/src/wmsplugin/WMSImage.java	(revision 5245)
@@ -94,5 +94,5 @@
 		String str = constURL + "&bbox=" + w +"," + s + ","+
 				e+","+n + "&width=" + wi + "&height=" + ht;
-		return new URL(str);
+		return new URL(str.replace(" ", "%20"));
 	}