Index: trunk/src/org/openstreetmap/josm/gui/util/GuiSizesHelper.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/util/GuiSizesHelper.java	(revision 10504)
+++ trunk/src/org/openstreetmap/josm/gui/util/GuiSizesHelper.java	(revision 10505)
@@ -31,5 +31,5 @@
             synchronized (GuiHelper.class) {
                 if (screenDPI == -1) {
-                    float scalePref = (float) Main.pref.getDouble("gui.scale", 0);
+                    float scalePref = (float) Main.pref.getDouble("gui.scale", 1.0);
                     if (scalePref != 0) {
                         screenDPI = 96f * scalePref;