diff --git a/src/server.py b/src/server.py
index e4289b7b0bc5988ffae1faca490c7056fafd680f..d5a97dffebd64b0be90a4de098e866ec1f623bbb 100755
--- a/src/server.py
+++ b/src/server.py
@@ -58,7 +58,7 @@ class index(object):
     """Index of the API (e.g. http://hostname/mra/)
 
     """
-    @HTTPCompatible()
+    @HTTPCompatible(authorized=["html"])
     def GET(self, format):
         return {
             "workspaces": href("workspaces"),