No need to check if rucaptcha_at is blank since (Time.now.to_i - 0) should always biger than 120

lib/rucaptcha/controller_helpers.rb

@@ -16,7 +16,7 @@ module RuCaptcha
     def verify_rucaptcha?(resource = nil)
       rucaptcha_at = session[:_rucaptcha_at].to_i
       # Captcha chars in Session expire in 2 minutes
-      if rucaptcha_at.blank? || (Time.now.to_i - rucaptcha_at) > 120
+      if (Time.now.to_i - rucaptcha_at) > 120
         return false
       end