Index: applications/editors/josm/plugins/mappaint/src/mappaint/MapPaintVisitor.java
===================================================================
--- applications/editors/josm/plugins/mappaint/src/mappaint/MapPaintVisitor.java	(revision 3619)
+++ applications/editors/josm/plugins/mappaint/src/mappaint/MapPaintVisitor.java	(revision 3620)
@@ -37,5 +37,5 @@
 			return true;
 		}
-			
+					
 		if(e == null) {
 			/* the default for things that don't have a rule (show, if scale is smaller than 1500m) */
@@ -47,5 +47,11 @@
 		}
 		
-		if(circum>=e.getMaxScale() / 70 || circum<e.getMinScale() / 70) {
+		// formular to calculate a map scale: natural size / map size = scale
+		// example: 876000mm (876m as displayed) / 22mm (roughly estimated screen size of legend bar) = 39818
+		//
+		// so the exact "correcting value" below depends only on the screen size and resolution
+		// XXX - do we need a Preference setting for this (if things vary widely)?
+		System.out.println("Circum: " + circum + " max: " + e.getMaxScale() + " min:" + e.getMinScale());
+		if(circum>=e.getMaxScale() / 22 || circum<e.getMinScale() / 22) {
 			return false;
 		} else {