Index: trunk/resources/data/validator/combinations.mapcss
===================================================================
--- trunk/resources/data/validator/combinations.mapcss	(revision 19336)
+++ trunk/resources/data/validator/combinations.mapcss	(revision 19337)
@@ -346,5 +346,5 @@
 way[junction=yes][highway],
 way[tracktype=grade1][surface].unpaved_surface,
-way[tracktype=grade2][surface][surface=~/^(sand|mud|ground|earth|dirt|grass|ice|salt|snow|woodchips)$/],
+way[tracktype=grade2][surface][surface=~/^(sand|mud|earth|dirt|grass|ice|salt|snow|woodchips)$/],
 way[tracktype=grade4][surface].fully_paved_surface,
 way[tracktype=grade5][surface].fully_paved_surface,