diff --git a/lib/kaminari/config.rb b/lib/kaminari/config.rb
new file mode 100644
index 0000000..f9eb6a4
--- /dev/null
+++ b/lib/kaminari/config.rb
@@ -0,0 +1,27 @@
+require 'active_support/configurable'
+
+module Kaminari
+  # Configures global settings for Kaminari
+  #   Kaminari.configure do |config|
+  #     config.default_per_page = 10
+  #   end
+  def self.configure(&block)
+    yield @config ||= Kaminari::Configuration.new
+  end
+
+  # Global settings for Kaminari
+  def self.config
+    @config
+  end
+
+  # need a Class for 3.0
+  class Configuration #:nodoc:
+    include ActiveSupport::Configurable
+    config_accessor :default_per_page
+  end
+
+  # this is ugly. why can't we pass the default value to config_accessor...?
+  configure do |config|
+    config.default_per_page = 25
+  end
+end
diff --git a/lib/kaminari/models/configuration_methods.rb b/lib/kaminari/models/configuration_methods.rb
index 53a0e85..bdd7db2 100644
--- a/lib/kaminari/models/configuration_methods.rb
+++ b/lib/kaminari/models/configuration_methods.rb
@@ -13,7 +13,7 @@ module Kaminari
       # This model's default per_page value
       # returns 25 unless explicitly overridden via <tt>paginates_per</tt>
       def default_per_page
-        @_default_per_page || Kaminari::DEFAULT_PER_PAGE
+        @_default_per_page || Kaminari.config.default_per_page
       end
     end
   end
diff --git a/lib/kaminari/railtie.rb b/lib/kaminari/railtie.rb
index e0d7c6e..107e20f 100644
--- a/lib/kaminari/railtie.rb
+++ b/lib/kaminari/railtie.rb
@@ -2,13 +2,13 @@ require 'rails'
 # ensure ORMs are loaded *before* initializing Kaminari
 begin; require 'mongoid'; rescue LoadError; end
 
+require File.join(File.dirname(__FILE__), 'config')
 require File.join(File.dirname(__FILE__), 'helpers/action_view_extension')
 require File.join(File.dirname(__FILE__), 'helpers/paginator')
 require File.join(File.dirname(__FILE__), 'models/page_scope_methods')
 require File.join(File.dirname(__FILE__), 'models/configuration_methods')
 
 module Kaminari
-  DEFAULT_PER_PAGE = 25 unless defined? ::Kaminari::DEFAULT_PER_PAGE
   class Railtie < ::Rails::Railtie #:nodoc:
     initializer 'kaminari' do |app|
       ActiveSupport.on_load(:active_record) do
diff --git a/spec/config/config_spec.rb b/spec/config/config_spec.rb
new file mode 100644
index 0000000..04eb6b6
--- /dev/null
+++ b/spec/config/config_spec.rb
@@ -0,0 +1,19 @@
+require File.expand_path('../spec_helper', File.dirname(__FILE__))
+
+describe Kaminari::Configuration do
+  subject { Kaminari.config }
+  describe 'default_per_page' do
+    context 'by default' do
+      its(:default_per_page) { should == 25 }
+    end
+    context 'configured via config block' do
+      before do
+        Kaminari.configure {|c| c.default_per_page = 17}
+      end
+      its(:default_per_page) { should == 17 }
+      after do
+        Kaminari.configure {|c| c.default_per_page = 25}
+      end
+    end
+  end
+end