Index: /applications/editors/josm/plugins/validator/src/org/openstreetmap/josm/plugins/validator/util/Entities.java
===================================================================
--- /applications/editors/josm/plugins/validator/src/org/openstreetmap/josm/plugins/validator/util/Entities.java	(revision 10531)
+++ /applications/editors/josm/plugins/validator/src/org/openstreetmap/josm/plugins/validator/util/Entities.java	(revision 10532)
@@ -399,5 +399,5 @@
                     res += '&' + entityContent + ';';
                 } else {
-                    res += entityValue;
+                    res += (char) entityValue;
                 }
                 i = semiColonIdx; // move index up to the semi-colon