diff --git a/lib/asciinema/endpoint.ex b/lib/asciinema/endpoint.ex
index 888ac78..fdb5fc1 100644
--- a/lib/asciinema/endpoint.ex
+++ b/lib/asciinema/endpoint.ex
@@ -34,9 +34,9 @@ defmodule Asciinema.Endpoint do
     store: PlugRailsCookieSessionStore,
     key: "_asciinema_session",
     secure: System.get_env("SCHEME") == "https",
-    signing_salt: System.get_env("SESSION_SIGNING_SALT") || "signed encrypted cookie",
+    signing_salt: "signed encrypted cookie",
     encrypt: true,
-    encryption_salt: System.get_env("SESSION_ENCRYPTION_SALT") || "encrypted cookie",
+    encryption_salt: "encrypted cookie",
     key_iterations: 1000,
     key_length: 64,
     key_digest: :sha,