diff --git a/lib/pleroma/plugs/http_signature.ex b/lib/pleroma/plugs/http_signature.ex
index e2874c469..d87fa52fa 100644
--- a/lib/pleroma/plugs/http_signature.ex
+++ b/lib/pleroma/plugs/http_signature.ex
@@ -3,7 +3,6 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.Plugs.HTTPSignaturePlug do
-  alias Pleroma.Web.ActivityPub.Utils
   import Plug.Conn
   require Logger
 
@@ -16,38 +15,30 @@ defmodule Pleroma.Web.Plugs.HTTPSignaturePlug do
   end
 
   def call(conn, _opts) do
-    user = Utils.get_ap_id(conn.params["actor"])
-    Logger.debug("Checking sig for #{user}")
     [signature | _] = get_req_header(conn, "signature")
 
-    cond do
-      signature && String.contains?(signature, user) ->
-        # set (request-target) header to the appropriate value
-        # we also replace the digest header with the one we computed
-        conn =
-          conn
-          |> put_req_header(
-            "(request-target)",
-            String.downcase("#{conn.method}") <> " #{conn.request_path}"
-          )
-
-        conn =
-          if conn.assigns[:digest] do
-            conn
-            |> put_req_header("digest", conn.assigns[:digest])
-          else
-            conn
-          end
-
-        assign(conn, :valid_signature, HTTPSignatures.validate_conn(conn))
-
-      signature ->
-        Logger.debug("Signature not from actor")
-        assign(conn, :valid_signature, false)
-
-      true ->
-        Logger.debug("No signature header!")
+    if signature do
+      # set (request-target) header to the appropriate value
+      # we also replace the digest header with the one we computed
+      conn =
         conn
+        |> put_req_header(
+          "(request-target)",
+          String.downcase("#{conn.method}") <> " #{conn.request_path}"
+        )
+
+      conn =
+        if conn.assigns[:digest] do
+          conn
+          |> put_req_header("digest", conn.assigns[:digest])
+        else
+          conn
+        end
+
+      assign(conn, :valid_signature, HTTPSignatures.validate_conn(conn))
+    else
+      Logger.debug("No signature header!")
+      conn
     end
   end
 end
diff --git a/test/plugs/http_signature_plug_test.exs b/test/plugs/http_signature_plug_test.exs
index efd811df7..d6fd9ea81 100644
--- a/test/plugs/http_signature_plug_test.exs
+++ b/test/plugs/http_signature_plug_test.exs
@@ -26,22 +26,4 @@ defmodule Pleroma.Web.Plugs.HTTPSignaturePlugTest do
       assert called(HTTPSignatures.validate_conn(:_))
     end
   end
-
-  test "bails out early if the signature isn't by the activity actor" do
-    params = %{"actor" => "https://mst3k.interlinked.me/users/luciferMysticus"}
-    conn = build_conn(:get, "/doesntmattter", params)
-
-    with_mock HTTPSignatures, validate_conn: fn _ -> false end do
-      conn =
-        conn
-        |> put_req_header(
-          "signature",
-          "keyId=\"http://mastodon.example.org/users/admin#main-key"
-        )
-        |> HTTPSignaturePlug.call(%{})
-
-      assert conn.assigns.valid_signature == false
-      refute called(HTTPSignatures.validate_conn(:_))
-    end
-  end
 end