diff -r f08eb4df84c1 -r ef50c4f07e4f launcher/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java
--- a/launcher/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java	Thu Jan 31 19:21:37 2013 +0100
+++ b/launcher/src/main/java/org/apidesign/bck2brwsr/launcher/Bck2BrwsrLauncher.java	Tue Feb 12 12:07:55 2013 +0100
@@ -285,10 +285,10 @@
             if (ch == '$' && params.length > 0) {
                 int cnt = is.read() - '0';
                 if (cnt == 'U' - '0') {
-                    os.write(baseURL.getBytes());
+                    os.write(baseURL.getBytes("UTF-8"));
                 }
                 if (cnt >= 0 && cnt < params.length) {
-                    os.write(params[cnt].getBytes());
+                    os.write(params[cnt].getBytes("UTF-8"));
                 }
             } else {
                 os.write(ch);