Index: applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/OsmMercator.java
===================================================================
--- applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/OsmMercator.java	(revision 31133)
+++ applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/OsmMercator.java	(revision 31135)
@@ -132,5 +132,5 @@
         int mp = getMaxPixels(aZoomlevel);
         double x = (mp * (aLongitude + 180l)) / 360l;
-        return Math.min(x, mp - 1);
+        return Math.min(x, mp);
     }