diff --git a/lib/pleroma/signature.ex b/lib/pleroma/signature.ex
index 91e610fe1..25fad22f7 100644
--- a/lib/pleroma/signature.ex
+++ b/lib/pleroma/signature.ex
@@ -6,7 +6,6 @@ defmodule Pleroma.Signature do
   @behaviour HTTPSignatures.Adapter
 
   alias Pleroma.User
-  alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.User.SigningKey
   require Logger
 
diff --git a/lib/pleroma/user/signing_key.ex b/lib/pleroma/user/signing_key.ex
index 60f1edb7c..709ee2593 100644
--- a/lib/pleroma/user/signing_key.ex
+++ b/lib/pleroma/user/signing_key.ex
@@ -4,7 +4,6 @@ defmodule Pleroma.User.SigningKey do
   import Ecto.Changeset
   alias Pleroma.User
   alias Pleroma.Repo
-  alias Pleroma.HTTP
 
   require Logger
 
@@ -136,7 +135,7 @@ def public_key_pem(%User{} = user) do
     end
   end
 
-  def public_key_pem(e) do
+  def public_key_pem(_e) do
     {:error, "key not found"}
   end
 
@@ -190,7 +189,7 @@ def fetch_remote_key(key_id) do
     resp = Pleroma.Object.Fetcher.fetch_and_contain_remote_object_from_id(key_id)
 
     case resp do
-      {:ok, _original_url, body} ->
+      {:ok, _body} ->
         case handle_signature_response(resp) do
           {:ok, ap_id, public_key_pem} ->
             Logger.debug("Fetched remote key: #{ap_id}")
@@ -227,16 +226,13 @@ defp extract_key_details(%{"id" => ap_id, "publicKey" => public_key}) do
     end
   end
 
-  defp handle_signature_response({:ok, _original_url, body}) do
-    case Jason.decode(body) do
-      {:ok, %{"id" => _user_id, "publicKey" => _public_key} = body} ->
+  defp handle_signature_response({:ok, body}) do
+    case body do
+      %{"id" => _user_id, "publicKey" => _public_key} ->
         extract_key_details(body)
 
-      {:ok, %{"error" => error}} ->
+      %{"error" => error} ->
         {:error, error}
-
-      {:error, _} ->
-        {:error, "Could not parse key"}
     end
   end
 
diff --git a/lib/pleroma/web/plugs/ensure_user_public_key_plug.ex b/lib/pleroma/web/plugs/ensure_user_public_key_plug.ex
index 4da9215a3..3eaa131e9 100644
--- a/lib/pleroma/web/plugs/ensure_user_public_key_plug.ex
+++ b/lib/pleroma/web/plugs/ensure_user_public_key_plug.ex
@@ -14,7 +14,7 @@ def call(conn, _opts) do
     key_id = key_id_from_conn(conn)
 
     unless is_nil(key_id) do
-      User.SigningKey.fetch_remote_key(key_id)
+      User.SigningKey.get_or_fetch_by_key_id(key_id)
       # now we SHOULD have the user that owns the key locally. maybe.
       # if we don't, we'll error out when we try to validate.
     end
diff --git a/test/pleroma/web/activity_pub/activity_pub_controller_test.exs b/test/pleroma/web/activity_pub/activity_pub_controller_test.exs
index 183818159..c41a19cc7 100644
--- a/test/pleroma/web/activity_pub/activity_pub_controller_test.exs
+++ b/test/pleroma/web/activity_pub/activity_pub_controller_test.exs
@@ -1094,7 +1094,7 @@ test "it returns a note activity in a collection", %{conn: conn} do
 
     test "it clears `unreachable` federation status of the sender", %{conn: conn, data: data} do
       user =
-        insert(:user)
+        insert(:user, ap_id: data["actor"])
         |> with_signing_key()
 
       data = Map.put(data, "bcc", [user.ap_id])
@@ -1277,12 +1277,22 @@ test "forwarded report from mastodon", %{conn: conn} do
         |> File.read!()
         |> String.replace("{{DOMAIN}}", remote_domain)
 
-      Tesla.Mock.mock(fn %{url: ^remote_actor} ->
-        %Tesla.Env{
-          status: 200,
-          body: mock_json_body,
-          headers: [{"content-type", "application/activity+json"}]
-        }
+      key_url = "#{remote_actor}#main-key"
+
+      Tesla.Mock.mock(fn
+        %{url: ^remote_actor} ->
+          %Tesla.Env{
+            status: 200,
+            body: mock_json_body,
+            headers: [{"content-type", "application/activity+json"}]
+          }
+
+        %{url: ^key_url} ->
+          %Tesla.Env{
+            status: 200,
+            body: mock_json_body,
+            headers: [{"content-type", "application/activity+json"}]
+          }
       end)
 
       data = %{
diff --git a/test/pleroma/web/activity_pub/views/user_view_test.exs b/test/pleroma/web/activity_pub/views/user_view_test.exs
index 2a367b680..7e251e510 100644
--- a/test/pleroma/web/activity_pub/views/user_view_test.exs
+++ b/test/pleroma/web/activity_pub/views/user_view_test.exs
@@ -11,7 +11,9 @@ defmodule Pleroma.Web.ActivityPub.UserViewTest do
   alias Pleroma.Web.CommonAPI
 
   test "Renders a user, including the public key" do
-    user = insert(:user)
+    user =
+      insert(:user)
+      |> with_signing_key()
 
     result = UserView.render("user.json", %{user: user})
 
@@ -37,7 +39,9 @@ test "Renders profile fields" do
   end
 
   test "Renders with emoji tags" do
-    user = insert(:user, emoji: %{"bib" => "/test"})
+    user =
+      insert(:user, emoji: %{"bib" => "/test"})
+      |> with_signing_key()
 
     assert %{
              "tag" => [
@@ -74,13 +78,18 @@ test "Does not add an avatar image if the user hasn't set one" do
   end
 
   test "renders an invisible user with the invisible property set to true" do
-    user = insert(:user, invisible: true)
+    user =
+      insert(:user, invisible: true)
+      |> with_signing_key()
 
     assert %{"invisible" => true} = UserView.render("service.json", %{user: user})
   end
 
   test "service has a few essential fields" do
-    user = insert(:user)
+    user =
+      insert(:user)
+      |> with_signing_key()
+
     result = UserView.render("service.json", %{user: user})
     assert result["id"]
     assert result["type"] == "Application"
@@ -120,7 +129,9 @@ test "remote users have an empty endpoints structure" do
     end
 
     test "instance users do not expose oAuth endpoints" do
-      user = insert(:user, nickname: nil, local: true)
+      user =
+        insert(:user, nickname: nil, local: true)
+        |> with_signing_key()
 
       result = UserView.render("user.json", %{user: user})