Index: applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/AbstractOsmTileSource.java
===================================================================
--- applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/AbstractOsmTileSource.java	(revision 25538)
+++ applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/tilesources/AbstractOsmTileSource.java	(revision 25576)
@@ -25,4 +25,7 @@
         this.name = name;
         this.baseUrl = base_url;
+        if(baseUrl.endsWith("/")) {
+            baseUrl = baseUrl.substring(0,baseUrl.length()-1);
+        }
         attrImgUrl = attr_img_url;
     }