Index: trunk/data/validator/deprecated.mapcss
===================================================================
--- trunk/data/validator/deprecated.mapcss	(revision 8204)
+++ trunk/data/validator/deprecated.mapcss	(revision 8383)
@@ -470,2 +470,9 @@
   fixAdd: "pole=transition";
 }
+
+/* see #11439 */
+*[sport=hockey] {
+  throwWarning: tr("{0} is inaccurate", "{0.tag}");
+  suggestAlternative: "sport=field_hockey";
+  suggestAlternative: "sport=ice_hockey";
+}