diff --git a/lib/rucaptcha/controller_helpers.rb b/lib/rucaptcha/controller_helpers.rb
index 4061f2a..7f6028a 100644
--- a/lib/rucaptcha/controller_helpers.rb
+++ b/lib/rucaptcha/controller_helpers.rb
@@ -29,12 +29,15 @@ module RuCaptcha
     # params:
     # resource - [optional] a ActiveModel object, if given will add validation error message to object.
     # :keep_session - if true, RuCaptcha will not delete the captcha code session.
+    # :captcha - if given, the value of it will be used to verify the captcha,
+    #            if do not give or blank, the value of params[:_rucaptcha] will be used to verify the captcha
     #
     # exmaples:
     #
     #   verify_rucaptcha?
     #   verify_rucaptcha?(user, keep_session: true)
     #   verify_rucaptcha?(nil, keep_session: true)
+    #   verify_rucaptcha?(nil, captcha: params[:user][:captcha])
     #
     def verify_rucaptcha?(resource = nil, opts = {})
       opts ||= {}
@@ -54,7 +57,7 @@ module RuCaptcha
       end
 
       # Make sure parama have captcha
-      captcha = (params[:_rucaptcha] || '').downcase.strip
+      captcha = (opts[:captcha] || params[:_rucaptcha] || '').downcase.strip
       if captcha.blank?
         return add_rucaptcha_validation_error
       end
diff --git a/lib/rucaptcha/version.rb b/lib/rucaptcha/version.rb
index ac6c77f..ff0538d 100644
--- a/lib/rucaptcha/version.rb
+++ b/lib/rucaptcha/version.rb
@@ -1,3 +1,3 @@
 module RuCaptcha
-  VERSION = '2.3.1'
+  VERSION = '2.3.2'
 end
diff --git a/lib/rucaptcha/view_helpers.rb b/lib/rucaptcha/view_helpers.rb
index 7a5cec2..d913c88 100644
--- a/lib/rucaptcha/view_helpers.rb
+++ b/lib/rucaptcha/view_helpers.rb
@@ -6,8 +6,8 @@ module RuCaptcha
       opts[:autocorrect]    = 'off'
       opts[:autocapitalize] = 'off'
       opts[:pattern]        = '[a-zA-Z]*'
-      opts[:maxlength]      = 5
       opts[:autocomplete]   = 'off'
+      opts[:maxlength] ||= 5
       tag(:input, opts)
     end