diff --git a/app/controllers/modules_controller.rb b/app/controllers/modules_controller.rb
index b726786..e2678ed 100644
--- a/app/controllers/modules_controller.rb
+++ b/app/controllers/modules_controller.rb
@@ -1,5 +1,4 @@
 class ModulesController < ApplicationController
-
   # GET /modules/1/metric_history
   def metric_history
     module_result = ModuleResult.new({ id: params[:id] })
@@ -28,15 +27,13 @@ class ModulesController < ApplicationController
     graphic.theme = {
       colors: ['grey'],
       marker_color: 'black',
-      background_colors: '#fff',
+      background_colors: '#fff'
     }
 
-    graphic.labels = Hash[dates.each_with_index.map{ |date, index| [index, date.to_s]}]
+    graphic.labels = Hash[dates.each_with_index.map{ |date, index| [index, date.strftime("%Y/%m/%d")]}]
 
     graphic.data('Values', values)
 
     graphic.to_blob
   end
-  
-
 end
\ No newline at end of file
diff --git a/spec/controllers/modules_controller_spec.rb b/spec/controllers/modules_controller_spec.rb
index 81607f0..2dbfc3f 100644
--- a/spec/controllers/modules_controller_spec.rb
+++ b/spec/controllers/modules_controller_spec.rb
@@ -16,12 +16,12 @@ describe ModulesController do
   describe "metric_history" do
     let (:module_id){ 1 }
     let (:metric_name ){ FactoryGirl.build(:loc).name }
-    let (:date ){ "2011-10-20T18:26:43.151+00:00" }
+    let (:date ){ DateTime.parse("2011-10-20T18:26:43.151+00:00") }
     let (:metric_result){ FactoryGirl.build(:metric_result) }
     let (:module_result){ FactoryGirl.build(:module_result) }
 
     before :each do
-      module_result #TODO discovery why this line is fundamental, without this line the test generates a nil object for module_result
+      module_result #TODO discover why this line is fundamental, without this line the test generates a nil object for module_result
       ModuleResult.expects(:new).at_least_once.with({id: module_result.id.to_s}).returns(module_result)
       module_result.expects(:metric_history).with(metric_name).returns({date => metric_result.value})
     end
@@ -43,7 +43,7 @@ describe ModulesController do
       it "should return two arrays, one of dates and other of values" do
         get :metric_history, id: module_result.id, metric_name: metric_name, module_id: module_id
         @graphic.maximum_value.should eq metric_result.value
-        @graphic.labels.first[1].should eq date  
+        @graphic.labels.first[1].should eq date.strftime("%Y/%m/%d") 
       end
     end
 
--
libgit2 0.21.2