Index: applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/MapMarkerDot.java
===================================================================
--- applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/MapMarkerDot.java	(revision 18279)
+++ applications/viewer/jmapviewer/src/org/openstreetmap/gui/jmapviewer/MapMarkerDot.java	(revision 18283)
@@ -8,4 +8,5 @@
 
 import org.openstreetmap.gui.jmapviewer.interfaces.MapMarker;
+import org.openstreetmap.josm.data.coor.LatLon;
 
 /**
@@ -25,4 +26,8 @@
     public MapMarkerDot(double lat, double lon) {
         this(Color.YELLOW, lat, lon);
+    }
+
+    public MapMarkerDot(LatLon latlon) {
+        this(Color.YELLOW, latlon.lat(), latlon.lon());
     }