Index: src/org/openstreetmap/josm/data/coor/Coordinate.java
===================================================================
--- src/org/openstreetmap/josm/data/coor/Coordinate.java	(revision 6168)
+++ src/org/openstreetmap/josm/data/coor/Coordinate.java	(working copy)
@@ -102,6 +102,8 @@
 
     @Override
     public boolean equals(Object obj) {
+        if (obj == null)
+            return false;
         if (this == obj)
             return true;
         if (getClass() != obj.getClass())