Index: trunk/tools/checkstyle/josm_checks.xml
===================================================================
--- trunk/tools/checkstyle/josm_checks.xml	(revision 10415)
+++ trunk/tools/checkstyle/josm_checks.xml	(revision 10416)
@@ -12,4 +12,5 @@
 <module name="Checker">
   <property name="severity" value="warning"/>
+  <property name="charset" value="UTF-8"/>
   <module name="TreeWalker">
     <module name="FileContentsHolder"/>