Index: trunk/data/validator/combinations.mapcss
===================================================================
--- trunk/data/validator/combinations.mapcss	(revision 13452)
+++ trunk/data/validator/combinations.mapcss	(revision 13508)
@@ -98,5 +98,5 @@
 node[map_type                  ][information!=map],
 *[site_type                    ][historic!=archaeological_site],
-*[artwork_type                 ][tourism!=artwork],
+*[artwork_type                 ][tourism!=artwork][exhibit!=artwork],
 *[castle_type                  ][historic!=castle],
 *[parking                      ][amenity!~/^(parking|parking_space|parking_entrance|motorcycle_parking)$/],