Index: trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSParser.jj
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSParser.jj	(revision 4278)
+++ trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss/MapCSSParser.jj	(revision 4280)
@@ -302,5 +302,8 @@
             <MINUS> max=uint()
         |
-            min=uint() ( <MINUS> ( max=uint() )? )?
+        LOOKAHEAD(2)
+            min=uint() <MINUS> ( max=uint() )?
+        |
+            min=uint() { max = min; }
     )
     { return new Pair<Integer, Integer>(min, max); }