diff --git a/app/models/reading.rb b/app/models/reading.rb
index a34edc8..1073222 100644
--- a/app/models/reading.rb
+++ b/app/models/reading.rb
@@ -1,4 +1,7 @@
 class Reading < KalibroGem::Entities::Reading
 	include KalibroRecord
 
+  validates :color, presence: true
+  validates :label, presence: true, kalibro_uniqueness: true
+
 end
diff --git a/spec/factories/readings.rb b/spec/factories/readings.rb
index bcc14a6..8bf60c8 100644
--- a/spec/factories/readings.rb
+++ b/spec/factories/readings.rb
@@ -15,11 +15,11 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 FactoryGirl.define do
-  factory :reading, class: KalibroGem::Entities::Reading do
+  factory :reading do
     id 42
     label "Good"
-    grade 10.5 
+    grade 10.5
     color "33DD33" 
     group_id 31
   end  
-end
\ No newline at end of file
+end
diff --git a/spec/models/reading_spec.rb b/spec/models/reading_spec.rb
index 566ef2f..7e4c31a 100644
--- a/spec/models/reading_spec.rb
+++ b/spec/models/reading_spec.rb
@@ -1,5 +1,27 @@
 require 'spec_helper'
 
 describe Reading do
-  
+  describe 'validations' do
+    subject {FactoryGirl.build(:reading)}
+
+    context 'active model validations' do
+      before :each do
+        Reading.expects(:all).at_least_once.returns([])
+      end
+      
+      it { should validate_presence_of(:label) }
+      it { should validate_presence_of(:color) }
+    end
+
+    context 'kalibro validations' do
+      before :each do
+        Reading.expects(:request).returns(42)
+      end
+
+      it 'should validate uniqueness' do
+        KalibroUniquenessValidator.any_instance.expects(:validate_each).with(subject, :label, subject.label)
+        subject.save
+      end
+    end
+  end
 end
--
libgit2 0.21.2