diff --git a/lib/honeypot-captcha.rb b/lib/honeypot-captcha.rb
index 4b74cf4..5534542 100644
--- a/lib/honeypot-captcha.rb
+++ b/lib/honeypot-captcha.rb
@@ -32,4 +32,8 @@ def self.included(base) # :nodoc:
   end
 end
 
-ActionController::Base.send(:include, HoneypotCaptcha::SpamProtection) if defined?(ActionController::Base)
+ActiveSupport.on_load(:action_controller) do
+  if defined?(ActionController::Base)
+    ActionController::Base.send(:include, HoneypotCaptcha::SpamProtection)
+  end
+end