diff --git a/lib/pleroma/signature.ex b/lib/pleroma/signature.ex
index 8fd422a6e..1aef7f82e 100644
--- a/lib/pleroma/signature.ex
+++ b/lib/pleroma/signature.ex
@@ -17,6 +17,7 @@ def key_id_to_actor_id(key_id) do
       key_id
       |> URI.parse()
       |> Map.put(:fragment, nil)
+      |> remove_query()
       |> remove_suffix(@known_suffixes)
 
     maybe_ap_id = URI.to_string(uri)
@@ -33,6 +34,23 @@ def key_id_to_actor_id(key_id) do
     end
   end
 
+  defp remove_query(uri) do
+    if uri.query do
+      new_query =
+        URI.decode_query(uri.query)
+        |> Map.delete("operation")
+        |> URI.encode_query()
+        |> case do
+          "" -> nil
+          query -> query
+        end
+
+      Map.put(uri, :query, new_query)
+    else
+      uri
+    end
+  end
+
   defp remove_suffix(uri, [test | rest]) do
     if not is_nil(uri.path) and String.ends_with?(uri.path, test) do
       Map.put(uri, :path, String.replace(uri.path, test, ""))