diff --git a/lib/actionpack/action_caching.rb b/lib/actionpack/action_caching.rb
index 39c2792..e5911ea 100644
--- a/lib/actionpack/action_caching.rb
+++ b/lib/actionpack/action_caching.rb
@@ -1 +1 @@
-require "actionpack/action_caching/railtie"
+require "actionpack/action_caching/railtie" if defined?(Rails)