diff --git a/lib/pleroma/web/websub/websub.ex b/lib/pleroma/web/websub/websub.ex
index b279a5060..905c237a0 100644
--- a/lib/pleroma/web/websub/websub.ex
+++ b/lib/pleroma/web/websub/websub.ex
@@ -89,6 +89,11 @@ defp get_subscription(topic, callback) do
     Repo.get_by(WebsubServerSubscription, topic: topic, callback: callback) || %WebsubServerSubscription{}
   end
 
+  # Temp hack for mastodon.
+  defp lease_time(%{"hub.lease_seconds" => ""}) do
+    {:ok, 60 * 60 * 24 * 3} # three days
+  end
+
   defp lease_time(%{"hub.lease_seconds" => lease_seconds}) do
     {:ok, String.to_integer(lease_seconds)}
   end