diff --git a/lib/testcontainers.ex b/lib/testcontainers.ex
index d3a0037..89b9e0a 100644
--- a/lib/testcontainers.ex
+++ b/lib/testcontainers.ex
@@ -258,7 +258,7 @@ defmodule Testcontainers do
 
         IO.puts(ryukDisabledMessage)
 
-        {:ok, nil}
+        {:ok}
 
       _ ->
         start_ryuk(conn, session_id, properties, docker_host, docker_hostname)