Index: trunk/data/validator/wikipedia.mapcss
===================================================================
--- trunk/data/validator/wikipedia.mapcss	(revision 11949)
+++ trunk/data/validator/wikipedia.mapcss	(revision 11976)
@@ -131,4 +131,5 @@
 *[wikipedia][!wikidata] {
   throwOther: tr("wikipedia tag is set, but there is no wikidata tag. Wikipedia plugin might help with wikidata id lookups");
+  group: tr("missing tag");
   assertMatch: "node wikipedia=a";
   assertNoMatch: "node wikipedia=a wikidata=Q123";