diff --git a/calendar-appengine-sample/src/main/java/com/google/api/services/samples/calendar/appengine/server/OAuth2Callback.java b/calendar-appengine-sample/src/main/java/com/google/api/services/samples/calendar/appengine/server/OAuth2Callback.java
index 93d14006..23c911ca 100644
--- a/calendar-appengine-sample/src/main/java/com/google/api/services/samples/calendar/appengine/server/OAuth2Callback.java
+++ b/calendar-appengine-sample/src/main/java/com/google/api/services/samples/calendar/appengine/server/OAuth2Callback.java
@@ -46,7 +46,7 @@ protected void onError(
       HttpServletRequest req, HttpServletResponse resp, AuthorizationCodeResponseUrl errorResponse)
       throws ServletException, IOException {
     String nickname = UserServiceFactory.getUserService().getCurrentUser().getNickname();
-    resp.getWriter().print("<h3>" + nickname + ", why don't you want to play with me?</h1>");
+    resp.getWriter().print("<h3>" + nickname + ", why don't you want to play with me?</h3>");
     resp.setStatus(200);
     resp.addHeader("Content-Type", "text/html");
   }