diff --git a/src/Ui/UiRequest.py b/src/Ui/UiRequest.py
index afaa4fec..c2d4d439 100644
--- a/src/Ui/UiRequest.py
+++ b/src/Ui/UiRequest.py
@@ -647,6 +647,7 @@ class UiRequest(object):
         SiteManager.site_manager.need(post["address"])
         return self.actionRedirect(post["url"])
 
+    @helper.encodeResponse
     def actionSiteAddPrompt(self, path):
         path_parts = self.parsePath(path)
         if not path_parts or not self.server.site_manager.isAddress(path_parts["address"]):