diff --git a/src/bepasty/apis/rest.py b/src/bepasty/apis/rest.py
index e9cb34f9..6693f56f 100644
--- a/src/bepasty/apis/rest.py
+++ b/src/bepasty/apis/rest.py
@@ -26,17 +26,22 @@
 # "/lodgeit/" in the same blueprint and there is no way to exclude
 # from using the same error handler ("/lodgeit/" is not REST api).
 def rest_errorhandler(func):
+    def error_message(description, code):
+        return jsonify({
+            'error': {'code': code, 'message': description},
+        }), code
+
     def handler(*args, **kwargs):
         try:
             return func(*args, **kwargs)
         except HTTPException as exc:
-            return exc.description, exc.code
+            return error_message(exc.description, exc.code)
         except Exception:
             if current_app.propagate_exceptions:
                 # if testing/debug mode, re-raise
                 raise
             exc = InternalServerError()
-            return exc.description, exc.code
+            return error_message(exc.description, exc.code)
 
     return handler
 
@@ -79,6 +84,8 @@ def update_item(self, item, name):
 
         # Make a Response and create Transaction-ID from ItemName
         response = make_response()
+        response.headers['Content-Type'] = 'application/json'
+        response.data = '{}'
         name_b = name if isinstance(name, bytes_type) else name.encode()
         trans_id_b = base64.b64encode(name_b)
         trans_id_s = trans_id_b if isinstance(trans_id_b, str) else trans_id_b.decode()
diff --git a/src/bepasty/tests/test_rest_server.py b/src/bepasty/tests/test_rest_server.py
index 2dddcfb7..66c66ccd 100644
--- a/src/bepasty/tests/test_rest_server.py
+++ b/src/bepasty/tests/test_rest_server.py
@@ -160,7 +160,9 @@ def check_response(response, code, ftype='application/json', check_data=True):
 
 
 def check_err_response(response, code, check_data=True):
-    check_response(response, code, 'text/html; charset=utf-8', check_data)
+    check_response(response, code, check_data=check_data)
+    if check_data:
+        assert code == response.json['error']['code']
     # check if doesn't have html tag
     assert not re.match(r'<.+>', response.data.decode())
 
@@ -183,14 +185,14 @@ def check_data_response(response, meta, data, offset=0, total_size=None,
         assert data == response.data
 
 
-def check_json_response(response, metas, check_data=True):
-    check_response(response, 200, check_data=check_data)
+def check_json_response(response, metas, code=200, check_data=True):
+    check_response(response, code, check_data=check_data)
     if check_data:
         assert metas == response.json
 
 
 def check_upload_response(response, code=201, check_data=True):
-    check_response(response, code, 'text/html; charset=utf-8', check_data)
+    check_json_response(response, {}, code=code, check_data=check_data)
 
     if code == 200:
         assert len(response.headers[TRANSACTION_ID]) > 0