diff --git a/plugins/mezuro/controllers/mezuro_plugin_profile_controller.rb b/plugins/mezuro/controllers/mezuro_plugin_profile_controller.rb
index d19fcbe..20ab1a5 100644
--- a/plugins/mezuro/controllers/mezuro_plugin_profile_controller.rb
+++ b/plugins/mezuro/controllers/mezuro_plugin_profile_controller.rb
@@ -81,7 +81,9 @@ class MezuroPluginProfileController < ProfileController
     if project_content_has_errors?
       redirect_to_error_page(@content.errors[:base])
     else
-      @score_history = modules_results.collect { |module_result| module_result.grade }
+      @score_history = modules_results.map do |module_result|
+        [module_result.grade, format_date_to_simple_form(module_result.date)]
+      end
       render :partial => 'content_viewer/score_history'
     end
   end
@@ -90,7 +92,7 @@ class MezuroPluginProfileController < ProfileController
   
   def filtering_metric_history(metric_name, module_history)
     metrics_history = module_history.map do |module_result|
-      [module_result.metric_results, module_result.date.to_s[0..9]]
+      [module_result.metric_results, format_date_to_simple_form(module_result.date)]
     end
     metric_history =  metrics_history.map do |metric_results_with_date|
       [(metric_results_with_date.first.select do |metric_result|
@@ -110,5 +112,10 @@ class MezuroPluginProfileController < ProfileController
   def project_content_has_errors?
     not @content.errors[:base].nil?
   end
+
+  def format_date_to_simple_form date
+    date.to_s[0..9]
+  end
+
 end
 
diff --git a/plugins/mezuro/lib/mezuro_plugin/helpers/content_viewer_helper.rb b/plugins/mezuro/lib/mezuro_plugin/helpers/content_viewer_helper.rb
index 4529edd..6b424fa 100644
--- a/plugins/mezuro/lib/mezuro_plugin/helpers/content_viewer_helper.rb
+++ b/plugins/mezuro/lib/mezuro_plugin/helpers/content_viewer_helper.rb
@@ -1,6 +1,9 @@
 require 'googlecharts'
 
 class MezuroPlugin::Helpers::ContentViewerHelper
+
+  MAX_NUMBER_OF_LABELS = 5
+
   def self.format_grade(grade)
     sprintf("%.2f", grade.to_f)
   end
@@ -8,7 +11,7 @@ class MezuroPlugin::Helpers::ContentViewerHelper
   def self.create_periodicity_options
    [["Not Periodically", 0], ["1 day", 1], ["2 days", 2], ["Weekly", 7], ["Biweeky", 15], ["Monthly", 30]]
   end
-  
+
   def self.create_license_options
    options = YAML.load_file("#{RAILS_ROOT}/plugins/mezuro/licenses.yaml")
    options = options.split(";")
@@ -16,7 +19,7 @@ class MezuroPlugin::Helpers::ContentViewerHelper
    options.each { |option| formated_options << [option, option] }
    formated_options
   end
-  
+
   def self.generate_chart(score_history)
     values = []
     labels = []
@@ -24,6 +27,7 @@ class MezuroPlugin::Helpers::ContentViewerHelper
       values << score_data.first
       labels << score_data.last
     end
+    labels = discretize_array labels
     Gchart.line(
                 :title_color => 'FF0000',
                 :size => '600x180', 
@@ -42,14 +46,33 @@ class MezuroPlugin::Helpers::ContentViewerHelper
     selected_option = options.find { |option| option.last == index.to_i }
     selected_option.first
   end
-  
+
   def self.format_name(metric_result)
     metric_result.metric.name.delete("() ")
   end
-  
+
   def self.get_license_option(selected)
     options = YAML.load_file("#{RAILS_ROOT}/plugins/mezuro/licenses.yaml")
     options.split(";")
     selected_option = options.find { |license| license == selected }
   end
+
+  private
+
+  def self.discretize_array(array)
+    if array.size > MAX_NUMBER_OF_LABELS
+      range_array.map { |i| discrete_element(array, i)}
+    else
+      array
+    end
+  end
+
+  def self.range_array
+    (0..(MAX_NUMBER_OF_LABELS - 1)).to_a
+  end
+
+  def self.discrete_element(array, i)
+    array[(i*(array.size - 1))/(MAX_NUMBER_OF_LABELS - 1)]
+  end
+
 end
diff --git a/plugins/mezuro/test/functional/mezuro_plugin_profile_controller_test.rb b/plugins/mezuro/test/functional/mezuro_plugin_profile_controller_test.rb
index a171fb1..581ead8 100644
--- a/plugins/mezuro/test/functional/mezuro_plugin_profile_controller_test.rb
+++ b/plugins/mezuro/test/functional/mezuro_plugin_profile_controller_test.rb
@@ -126,7 +126,7 @@ class MezuroPluginProfileControllerTest < ActionController::TestCase
     get :module_metrics_history, :profile => @profile.identifier, :id => @content.id, :module_name => @project.name,
     :metric_name => @module_result.metric_result.first.metric.name.delete("() ")
     assert_equal @content, assigns(:content)
-    assert_equal [@module_result.metric_result[0].value], assigns(:score_history)
+    assert_equal [[@module_result.metric_result[0].value, @module_result.date.to_s[0..9]]], assigns(:score_history)
     assert_response 200
   end
   
@@ -134,7 +134,7 @@ class MezuroPluginProfileControllerTest < ActionController::TestCase
     Kalibro::ModuleResult.expects(:request).with("ModuleResult", :get_result_history, {:project_name => @project.name, :module_name => @project.name}).returns({:module_result => @module_result})
     get :module_grade_history, :profile => @profile.identifier, :id => @content.id, :module_name => @project.name
     assert_equal @content, assigns(:content)
-    assert_equal [@module_result.grade], assigns(:score_history)
+    assert_equal [[@module_result.grade, @module_result.date.to_s[0..9]]], assigns(:score_history)
     assert_response 200
   end
 
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libgit2 0.21.2