Index: /trunk/src/org/openstreetmap/josm/data/projection/CustomProjection.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/data/projection/CustomProjection.java	(revision 9641)
+++ /trunk/src/org/openstreetmap/josm/data/projection/CustomProjection.java	(revision 9642)
@@ -42,10 +42,10 @@
 
     /*
-     * Equation taken from:
-     * https://github.com/openlayers/ol3/blob/master/src/ol/proj/proj.js#L48-#L49
+     * Equation for METER_PER_UNIT_DEGREE taken from:
+     * https://github.com/openlayers/ol3/blob/master/src/ol/proj/epsg4326projection.js#L58
      * Value for Radius taken form:
-     * https://github.com/openlayers/ol3/blob/master/src/ol/sphere/normal.js#L11
-     */
-    private static final double METER_PER_UNIT_DEGREE = 2 * Math.PI * 6370997 / 360;
+     * https://github.com/openlayers/ol3/blob/master/src/ol/sphere/wgs84sphere.js#L11
+     */
+    private static final double METER_PER_UNIT_DEGREE = 2 * Math.PI * 6378137.0 / 360;
     private static final Map<String, Double> UNITS_TO_METERS = getUnitsToMeters();
     private static final Map<String, Double> PRIME_MERIDANS = getPrimeMeridians();