Index: /trunk/src/org/openstreetmap/josm/data/projection/AbstractProjection.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/data/projection/AbstractProjection.java	(revision 12148)
+++ /trunk/src/org/openstreetmap/josm/data/projection/AbstractProjection.java	(revision 12149)
@@ -169,5 +169,5 @@
     public double getDefaultZoomInPPD() {
         // this will set the map scaler to about 1000 m
-        return 10;
+        return 10 / getMetersPerUnit();
     }