Index: trunk/data/validator/deprecated.mapcss
===================================================================
--- trunk/data/validator/deprecated.mapcss	(revision 10100)
+++ trunk/data/validator/deprecated.mapcss	(revision 10229)
@@ -376,5 +376,5 @@
 }
 
-/* see #10661, #10837, #11737 */
+/* see #10661, #10837, #11737, #12771 */
 *[traffic_calming=yes],
 *[access=restricted],
@@ -384,4 +384,5 @@
 *[shop="*"],
 *[craft=yes],
+*[service=yes],
 *[place=yes] {
   throwWarning: tr("{0}={1} is unspecific. Please replace ''{1}'' by a specific value.", "{0.key}", "{0.value}");
@@ -834,2 +835,9 @@
   fixAdd: "vending=newspapers";
 }
+
+/* #12771 */
+*[service=drive_through] {
+  throwWarning: tr("{0} is deprecated", "{0.tag}");
+  suggestAlternative: "service=drive-through";
+  fixAdd: "service=drive-through";
+}