Index: data/validator/combinations.mapcss
===================================================================
--- data/validator/combinations.mapcss	(revision 14442)
+++ data/validator/combinations.mapcss	(working copy)
@@ -394,7 +394,7 @@
 }
 
 /* any other *_name tag (with some exceptions) but not a name , see #10837 #11297 #11539 #16437 */
-*[/_name$/][!name][!old_name][!loc_name][!uic_name][!artist_name][!lock_name][!"osak:municipality_name"][!"osak:street_name"][noname!=yes] {
+*[/_name$/][!name][!old_name][!loc_name][!uic_name][!artist_name][!lock_name][!"osak:municipality_name"][!"osak:street_name"][noname!=yes][!reg_name] {
   throwWarning: tr("alternative name without {0}", "{1.key}");
   group: tr("missing tag");
 }