diff --git a/lib/flexible_date/base.rb b/lib/flexible_date/base.rb
index 4b960d4..f683da2 100644
--- a/lib/flexible_date/base.rb
+++ b/lib/flexible_date/base.rb
@@ -23,7 +23,11 @@ def flexible_date(*params)
         attr_accessible field_with_suffix
 
         define_method "#{field_with_suffix}" do
-          format = I18n.t("flexible_date.configuration.format")
+          if self.class.columns_hash[field.to_s].type == :datetime
+            format = I18n.t("flexible_date.configuration.datetime_format")
+          else
+            format = I18n.t("flexible_date.configuration.format")
+          end
           date = self.send("#{field}")
           date.try(:strftime, format)
         end
@@ -47,8 +51,14 @@ def flexible_date(*params)
               "flexible_date.messages.invalid")
           else
             begin
-              format = I18n.t("flexible_date.configuration.format")
-              self.send("#{field}=", value.blank? ? "" : Date.strptime(value, format))
+              if self.class.columns_hash[field.to_s].type == :datetime
+                class_name = DateTime
+                format = I18n.t("flexible_date.configuration.datetime_format")
+              else
+                class_name = Date
+                format = I18n.t("flexible_date.configuration.format")
+              end
+              self.send("#{field}=", value.blank? ? "" : class_name.strptime(value, format))
             rescue ArgumentError
               self.send("#{field}=", nil)
               @flexible_date_errors["#{field}".to_sym] = try_t.call(
diff --git a/spec/dummy/app/models/event.rb b/spec/dummy/app/models/event.rb
index 58596ab..df28589 100644
--- a/spec/dummy/app/models/event.rb
+++ b/spec/dummy/app/models/event.rb
@@ -1,7 +1,8 @@
 class Event < ActiveRecord::Base
-  attr_accessible :end_date, :judgement_day, :payday, :start_date, :description
+  attr_accessible :end_date, :judgement_day, :payday, :start_date, :description,
+    :created_at
 
-  flexible_date :start_date, :end_date
+  flexible_date :start_date, :end_date, :created_at
   flexible_date :judgement_day, :suffix => 'yyz'
   flexible_date :payday, :if => Proc.new { |n| n.description.blank? }
 end
diff --git a/spec/dummy/config/locales/br.yml b/spec/dummy/config/locales/br.yml
index a6bc867..98c4a6b 100644
--- a/spec/dummy/config/locales/br.yml
+++ b/spec/dummy/config/locales/br.yml
@@ -2,6 +2,7 @@ br:
   flexible_date:
     configuration:
       format: "%d/%m/%Y"
+      datetime_format: "%d/%m/%Y %H:%M:%S"
     messages:
       with_suffix:
         invalid: "inválida."
diff --git a/spec/dummy/config/locales/en.yml b/spec/dummy/config/locales/en.yml
index 9f2e129..c7c80ed 100644
--- a/spec/dummy/config/locales/en.yml
+++ b/spec/dummy/config/locales/en.yml
@@ -2,5 +2,6 @@ en:
   flexible_date:
     configuration:
       format: "%d-%m-%Y"
+      datetime_format: "%d-%m-%Y %H:%M:%S"
     messages:
       invalid: "invalid."
diff --git a/spec/flexible_date_spec.rb b/spec/flexible_date_spec.rb
index b92eac0..b910444 100644
--- a/spec/flexible_date_spec.rb
+++ b/spec/flexible_date_spec.rb
@@ -9,7 +9,7 @@
 
   it 'allows mass assignment of suffixed attributes' do
     expect {
-      Event.new(payday_flex: nil, judgement_day_yyz: nil,
+      Event.new(payday_flex: nil, judgement_day_yyz: nil, created_at_flex: nil,
                 start_date_flex: nil, end_date_flex: nil)
     }.to_not raise_error ActiveModel::MassAssignmentSecurity::Error
   end
@@ -24,8 +24,8 @@
       it 'with empty date' do
         @event.payday_flex = ""
         @event.should_not be_valid
-        @event.errors[:payday_flex].should == ["inválida."]
         @event.errors[:payday].should == ["inválida."]
+        @event.errors[:payday_flex].should == ["inválida."]
       end
 
       it 'without empty date' do
@@ -50,6 +50,7 @@
       event.should respond_to(:start_date_flex=)
       event.should respond_to(:end_date_flex)
       event.should respond_to(:end_date_flex=)
+      event.should respond_to(:created_at_flex=)
     end
 
     it 'can be customized' do
@@ -141,4 +142,22 @@
       end
     end
   end
+
+  context 'for datetime fields' do
+    before(:each) { I18n.locale = :en }
+
+    it 'valid datetime' do
+      event = Event.new
+      event.created_at_flex = "30-04-2010 22:15:59"
+      event.should be_valid
+    end
+
+    it 'invalid datetime' do
+      event = Event.new
+      event.created_at_flex = "30-04-2010"
+      event.should_not be_valid
+      event.errors[:created_at_flex].should == ["invalid."]
+      event.errors[:created_at].should == ["invalid."]
+    end
+  end
 end