Index: trunk/src/org/openstreetmap/josm/data/validation/tests/UnclosedWays.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/validation/tests/UnclosedWays.java	(revision 15295)
+++ trunk/src/org/openstreetmap/josm/data/validation/tests/UnclosedWays.java	(revision 15297)
@@ -145,5 +145,5 @@
         new UnclosedWaysCheck(1103, "amenities", marktr("amenities type {0}")),
         new UnclosedWaysCheck(1104, "sport",     marktr("sport type {0}"),
-                new HashSet<>(Arrays.asList("water_slide", "climbing", "skiing", "toboggan", "bobsleigh"))),
+                new HashSet<>(Arrays.asList("water_slide", "climbing", "skiing", "toboggan", "bobsleigh", "karting"))),
         new UnclosedWaysCheck(1105, "tourism",   marktr("tourism type {0}"),
                 new HashSet<>(Arrays.asList("attraction", "artwork"))),