diff --git a/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex b/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
index b3c234010..576e9d3ce 100644
--- a/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
+++ b/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
@@ -1029,11 +1029,13 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
     created_at =
       NaiveDateTime.to_iso8601(created_at)
       |> String.replace(~r/(\.\d+)?$/, ".000Z", global: false)
+      
+    id = id |> to_string
 
     case activity.data["type"] do
       "Create" ->
         %{
-          id: id |> to_string,
+          id: id,
           type: "mention",
           created_at: created_at,
           account: AccountView.render("account.json", %{user: actor}),
@@ -1044,7 +1046,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
         liked_activity = Activity.get_create_activity_by_object_ap_id(activity.data["object"])
 
         %{
-          id: id |> to_string,
+          id: id,
           type: "favourite",
           created_at: created_at,
           account: AccountView.render("account.json", %{user: actor}),
@@ -1055,7 +1057,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
         announced_activity = Activity.get_create_activity_by_object_ap_id(activity.data["object"])
 
         %{
-          id: id |> to_string,
+          id: id,
           type: "reblog",
           created_at: created_at,
           account: AccountView.render("account.json", %{user: actor}),
@@ -1064,7 +1066,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
 
       "Follow" ->
         %{
-          id: id |> to_string,
+          id: id,
           type: "follow",
           created_at: created_at,
           account: AccountView.render("account.json", %{user: actor})