diff --git a/src/Fedi/Activity.hs b/src/Fedi/Activity.hs
index e36f633..e3cee87 100644
--- a/src/Fedi/Activity.hs
+++ b/src/Fedi/Activity.hs
@@ -43,7 +43,7 @@ type Followers = [Actor]
 type Following = [Actor]
 
 type Inbox = Collection Ordered Activity
-type Outbox = Collection Unordered Activity
+type Outbox = Collection Ordered Activity
 type OutboxPage = OrderedCollectionPage Activity
 
 data Ordered
@@ -88,8 +88,8 @@ instance A.ToJSON Activity where
     create@Create{} ->
       A.object
         [ "@context" A..=
-          [ "https://www.w3.org/ns/activitystreams" :: String
-          ]
+          ( "https://www.w3.org/ns/activitystreams" :: String
+          )
         , "type" A..= ("Create" :: String)
         , "id" A..= create.id
         , "actor" A..= create.actor
@@ -100,8 +100,8 @@ instance A.ToJSON a => A.ToJSON (Collection Ordered a) where
   toJSON collection =
     A.object
       [ "@context" A..=
-        [ "https://www.w3.org/ns/activitystreams" :: String
-        ]
+        ( "https://www.w3.org/ns/activitystreams" :: String
+        )
       , "id" A..= collection.id
       , "type" A..= ("OrderedCollection" :: String)
       , "summary" A..= collection.summary
@@ -115,8 +115,8 @@ instance A.ToJSON a => A.ToJSON (Collection Unordered a) where
   toJSON collection =
     A.object
       [ "@context" A..=
-        [ "https://www.w3.org/ns/activitystreams" :: String
-        ]
+        ( "https://www.w3.org/ns/activitystreams" :: String
+        )
       , "id" A..= collection.id
       , "type" A..= ("Collection" :: String)
       , "summary" A..= collection.summary