diff --git a/gns3server/web/response.py b/gns3server/web/response.py
index fc1b55de..fc16988c 100644
--- a/gns3server/web/response.py
+++ b/gns3server/web/response.py
@@ -35,6 +35,7 @@ class Response(aiohttp.web.Response):
         self._route = route
         self._output_schema = output_schema
         self._request = request
+        headers['Access-Control-Allow-Origin'] = '*'
         headers['X-Route'] = self._route
         headers['Server'] = "Python/{0[0]}.{0[1]} GNS3/{1}".format(sys.version_info, __version__)
         super().__init__(headers=headers, **kwargs)