Index: /trunk/src/org/openstreetmap/josm/io/AbstractReader.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/io/AbstractReader.java	(revision 14086)
+++ /trunk/src/org/openstreetmap/josm/io/AbstractReader.java	(revision 14087)
@@ -573,5 +573,5 @@
 
     private static boolean areLatLonDefined(double lat, double lon) {
-        return lat != Double.NaN && lon != Double.NaN;
+        return !Double.isNaN(lat) && !Double.isNaN(lon);
     }