Index: src/org/openstreetmap/josm/gui/ExtendedDialog.java
===================================================================
--- src/org/openstreetmap/josm/gui/ExtendedDialog.java	(revision 2161)
+++ src/org/openstreetmap/josm/gui/ExtendedDialog.java	(working copy)
@@ -297,7 +297,7 @@
         }
 
         // Ensure all required variables are available
-        if(rememberSizePref.length() == 0 && defaultWindowGeometry != null) {
+        if(rememberSizePref.length() != 0 && defaultWindowGeometry != null) {
             if(visible) {
                 new WindowGeometry(rememberSizePref,
                         defaultWindowGeometry).apply(this);
@@ -395,4 +395,4 @@
         lbl.setMaxWidth(Math.round(screenSize.width*1/2));
         return lbl;
     }
-}
\ No newline at end of file
+}