diff --git a/lib/pleroma/web/activity_pub/mrf/dnsrbl_policy.ex b/lib/pleroma/web/activity_pub/mrf/dnsrbl_policy.ex
index 9543cc545..7c6bb888f 100644
--- a/lib/pleroma/web/activity_pub/mrf/dnsrbl_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/dnsrbl_policy.ex
@@ -103,7 +103,11 @@ defp check_rbl(%{host: actor_host}, object) do
         {:ok, object}
       else
         Task.start(fn ->
-          reason = rblquery(query, :txt) || "undefined"
+          reason =
+            case rblquery(query, :txt) do
+              [[result]] -> result
+              _ -> "undefined"
+            end
 
           Logger.warning(
             "DNSRBL Rejected activity from #{actor_host} for reason: #{inspect(reason)}"