Index: trunk/resources/data/validator/geometry.mapcss
===================================================================
--- trunk/resources/data/validator/geometry.mapcss	(revision 19590)
+++ trunk/resources/data/validator/geometry.mapcss	(revision 19606)
@@ -432,5 +432,5 @@
 /* 20421 */
 area[power=substation] ⊇ *[transformer=distribution] {
-  throwWarning: tr("A distribution transformer shouldn't be contained in a substation.");
+  throwWarning: tr("A distribution transformer should not be contained in a substation.");
   suggestAlternative: "transformer=main";
   fixAdd: "transformer=main";