Index: trunk/data/validator/geometry.mapcss
===================================================================
--- trunk/data/validator/geometry.mapcss	(revision 10232)
+++ trunk/data/validator/geometry.mapcss	(revision 10251)
@@ -270,5 +270,5 @@
 
 /* #12646 */
-way[waterway]!:closed >[index=-1] node!:connection:in-downloaded-area { 
+way[waterway][waterway!=canal]!:closed >[index=-1] node!:connection:in-downloaded-area { 
   throwWarning: tr("Waterway ends without a connection to another waterway or the direction of the waterway is wrong.");
 }