Index: applications/editors/josm/plugins/tageditor/src/org/openstreetmap/josm/plugins/tageditor/tagspec/TagSpecifications.java
===================================================================
--- applications/editors/josm/plugins/tageditor/src/org/openstreetmap/josm/plugins/tageditor/tagspec/TagSpecifications.java	(revision 33020)
+++ applications/editors/josm/plugins/tageditor/src/org/openstreetmap/josm/plugins/tageditor/tagspec/TagSpecifications.java	(revision 33021)
@@ -7,4 +7,5 @@
 import java.io.InputStreamReader;
 import java.io.Reader;
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.List;
@@ -74,5 +75,5 @@
             return;
         }
-        try (BufferedReader reader = new BufferedReader(new InputStreamReader(in))) {
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(in, StandardCharsets.UTF_8))) {
             TagSpecifications spec = new TagSpecifications();
             spec.load(reader);