diff --git a/lib/pleroma/web/mastodon_api/views/instance_view.ex b/lib/pleroma/web/mastodon_api/views/instance_view.ex
index 7f73917d6..e7ec9c2ab 100644
--- a/lib/pleroma/web/mastodon_api/views/instance_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/instance_view.ex
@@ -120,6 +120,7 @@ defmodule Pleroma.Web.MastodonAPI.InstanceView do
       "pleroma_emoji_reactions",
       "pleroma_custom_emoji_reactions",
       "pleroma_chat_messages",
+      "pleroma:pin_chats",
       if Config.get([:instance, :show_reactions]) do
         "exposable_reactions"
       end,