Index: trunk/data/validator/deprecated.mapcss
===================================================================
--- trunk/data/validator/deprecated.mapcss	(revision 9836)
+++ trunk/data/validator/deprecated.mapcss	(revision 10004)
@@ -273,4 +273,8 @@
   assertMatch: "node name=FIXME";
   assertNoMatch: "node name=valid name";
+}
+
+*[note][note=~/^(?i)fixme$/] {
+  throwWarning: tr("{0} is unspecific. Instead use the key fixme with the information what exactly should be fixed in the value of fixme.", "{0.tag}");
 }