diff --git a/slices/micropub/actions/posts/handle.rb b/slices/micropub/actions/posts/handle.rb
index c3dc6af..31316de 100644
--- a/slices/micropub/actions/posts/handle.rb
+++ b/slices/micropub/actions/posts/handle.rb
@@ -31,10 +31,10 @@ module Micropub
 
           # create
           if req_entity && verify_scope(req: req, scope: :create)
-            create_entry.call(req_entity: req_entity) do |m|
+            Dry::Matcher::ResultMatcher.(create_entry.call(req_entity: req_entity)) do |m|
               m.success do |post|
+                res.headers["Location"] = "#{settings.micropub_site_url}/#{post.value!.post_type}/#{post.value!.slug}"
                 res.status = 201
-                res.headers["Location"] = "#{settings.micropub_site_url}/#{post.post_type}/#{post.slug}"
               end
 
               m.failure do |validation|