diff --git a/lib/pleroma/web/api_spec/operations/domain_block_operation.ex b/lib/pleroma/web/api_spec/operations/domain_block_operation.ex
index 2340fd914..dac3bc883 100644
--- a/lib/pleroma/web/api_spec/operations/domain_block_operation.ex
+++ b/lib/pleroma/web/api_spec/operations/domain_block_operation.ex
@@ -73,10 +73,10 @@ defmodule Pleroma.Web.ApiSpec.DomainBlockOperation do
       %Schema{
         type: :object,
         properties: %{
-          domain: %Schema{type: :string}
+          "domain" => %Schema{type: :string}
         }
       },
-      required: false,
+      required: true,
       example: %{
         "domain" => "facebook.com"
       }
diff --git a/lib/pleroma/web/mastodon_api/controllers/domain_block_controller.ex b/lib/pleroma/web/mastodon_api/controllers/domain_block_controller.ex
index b2e347ed9..33dfee3ca 100644
--- a/lib/pleroma/web/mastodon_api/controllers/domain_block_controller.ex
+++ b/lib/pleroma/web/mastodon_api/controllers/domain_block_controller.ex
@@ -27,7 +27,7 @@ defmodule Pleroma.Web.MastodonAPI.DomainBlockController do
   end
 
   @doc "POST /api/v1/domain_blocks"
-  def create(%{assigns: %{user: blocker}, body_params: %{domain: domain}} = conn, _params) do
+  def create(%{assigns: %{user: blocker}, body_params: %{"domain" => domain}} = conn, _params) do
     User.block_domain(blocker, domain)
     json(conn, %{})
   end
@@ -38,7 +38,7 @@ defmodule Pleroma.Web.MastodonAPI.DomainBlockController do
   end
 
   @doc "DELETE /api/v1/domain_blocks"
-  def delete(%{assigns: %{user: blocker}, body_params: %{domain: domain}} = conn, _params) do
+  def delete(%{assigns: %{user: blocker}, body_params: %{"domain" => domain}} = conn, _params) do
     User.unblock_domain(blocker, domain)
     json(conn, %{})
   end