diff --git a/scm-webapp/src/main/java/sonia/scm/web/i18n/I18nServlet.java b/scm-webapp/src/main/java/sonia/scm/web/i18n/I18nServlet.java
index b074781fec..6224b154a7 100644
--- a/scm-webapp/src/main/java/sonia/scm/web/i18n/I18nServlet.java
+++ b/scm-webapp/src/main/java/sonia/scm/web/i18n/I18nServlet.java
@@ -78,6 +78,8 @@ public class I18nServlet extends HttpServlet {
   @VisibleForTesting
   @Override
   protected void doGet(HttpServletRequest req, HttpServletResponse response) {
+    response.setCharacterEncoding("UTF-8");
+    response.setContentType("application/json");
     try (PrintWriter out = response.getWriter()) {
       response.setContentType("application/json");
       String path = req.getServletPath();