Index: trunk/data/validator/deprecated.mapcss
===================================================================
--- trunk/data/validator/deprecated.mapcss	(revision 14805)
+++ trunk/data/validator/deprecated.mapcss	(revision 14809)
@@ -470,5 +470,5 @@
 }
 
-way[footway=/both|right|left|no|none/] {
+way[footway =~ /^(both|right|left|no|none)$/] {
   throwWarning: tr("{0} is deprecated", "{0.tag}");
   group: tr("deprecated tagging");