diff --git a/plugins/mezuro/lib/kalibro/metric_configuration.rb b/plugins/mezuro/lib/kalibro/metric_configuration.rb
index 6ca974d..c70217f 100644
--- a/plugins/mezuro/lib/kalibro/metric_configuration.rb
+++ b/plugins/mezuro/lib/kalibro/metric_configuration.rb
@@ -51,7 +51,7 @@ class Kalibro::MetricConfiguration < Kalibro::Model
   def save
     begin
       self.class.request("MetricConfiguration", :save_metric_configuration, {
-        :metric_configuration => to_hash(:except => [:configuration_name]),
+        :metric_configuration => to_hash,
         :configuration_name => configuration_name})
       true
     rescue Exception => error
@@ -65,7 +65,10 @@ class Kalibro::MetricConfiguration < Kalibro::Model
         :metric_name=> metric.name
       })
   end
-
+  
+  def to_hash
+    super :except => [:configuration_name]
+  end
 
   private
   
diff --git a/plugins/mezuro/test/unit/kalibro/metric_configuration_test.rb b/plugins/mezuro/test/unit/kalibro/metric_configuration_test.rb
index d76941b..f5c5a99 100644
--- a/plugins/mezuro/test/unit/kalibro/metric_configuration_test.rb
+++ b/plugins/mezuro/test/unit/kalibro/metric_configuration_test.rb
@@ -19,7 +19,7 @@ class MetricConfigurationTest < ActiveSupport::TestCase
   end
 
   should 'convert metric configuration to hash' do
-    assert_equal @native_metric_configuration_hash, @native_metric_configuration.to_hash(:except => [:configuration_name])
+    assert_equal @native_metric_configuration_hash, @native_metric_configuration.to_hash()
   end
 
   should 'create appropriate metric type' do
--
libgit2 0.21.2