Index: trunk/resources/data/validator/geometry.mapcss
===================================================================
--- trunk/resources/data/validator/geometry.mapcss	(revision 18019)
+++ trunk/resources/data/validator/geometry.mapcss	(revision 18175)
@@ -363,5 +363,5 @@
 
 /* #12646, #12992, #16334 */
-way[waterway=~/^(stream|river|drain)$/]!:closed >[index=-1] node[natural!=sinkhole][natural!=cave_entrance]!:connection:in-downloaded-area { 
+way[waterway=~/^(stream|river|drain)$/]!:closed >[index=-1] node[natural!=sinkhole][natural!=cave_entrance][waterway!=stream_end]!:connection:in-downloaded-area { 
   throwWarning: tr("Waterway ends without a connection to another waterway or the direction of the waterway is wrong.");
 }