Index: trunk/data/validator/deprecated.mapcss
===================================================================
--- trunk/data/validator/deprecated.mapcss	(revision 8165)
+++ trunk/data/validator/deprecated.mapcss	(revision 8183)
@@ -413,4 +413,9 @@
 }
 
+/* see #11329 */
+way[oneway=-1] {
+  throwWarning: tr("{0} is not recommended. Use the Reverse Ways function from the Tools menu.", "{0.tag}");
+}
+
 *[drinkable] {
   throwWarning: tr("{0} is deprecated", "{0.key}");