Index: /applications/editors/josm/plugins/wikipedia/src/org/wikipedia/WikipediaApp.java
===================================================================
--- /applications/editors/josm/plugins/wikipedia/src/org/wikipedia/WikipediaApp.java	(revision 29322)
+++ /applications/editors/josm/plugins/wikipedia/src/org/wikipedia/WikipediaApp.java	(revision 29323)
@@ -99,10 +99,10 @@
                 connection.setDoOutput(true);
 
-                OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream());
+                OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream(), "UTF-8");
                 out.write("articles=" + encodeURL(Utils.join(",", articleNames)));
                 out.close();
 
 
-                final Scanner scanner = new Scanner(connection.getInputStream()).useDelimiter("\n");
+                final Scanner scanner = new Scanner(connection.getInputStream(), "UTF-8").useDelimiter("\n");
                 while (scanner.hasNext()) {
                     //[article]\t[0|1]
@@ -257,5 +257,5 @@
                         + "&article=" + encodeURL(wikipediaArticle);
                 System.out.println("Wikipedia: GET " + url);
-                final Scanner scanner = new Scanner(new URL(url).openStream());
+                final Scanner scanner = new Scanner(new URL(url).openStream(), "UTF-8");
                 wiwosmStatus = scanner.hasNextInt() && scanner.nextInt() == 1;
             } catch (IOException ex) {