diff --git a/app/controllers/base_metric_configurations_controller.rb b/app/controllers/base_metric_configurations_controller.rb
index 91b0457..30bf0fa 100644
--- a/app/controllers/base_metric_configurations_controller.rb
+++ b/app/controllers/base_metric_configurations_controller.rb
@@ -124,7 +124,7 @@ class BaseMetricConfigurationsController < ApplicationController
         metric = collector.find_metric_by_name(params[:metric_name])
       end
 
-      if !metric.nil? && metric.type == self.class::METRIC_TYPE
+      if !metric.nil? && metric.type == metric_type
         @metric_configuration.metric = metric
         return
       end
@@ -144,4 +144,11 @@ class BaseMetricConfigurationsController < ApplicationController
       end
     end
   end
+
+  # Notice: If you add some logic to this method, remove the :nocov: below
+  # :nocov:
+  def metric_type
+    raise NotImplementedError
+  end
+  # :nocov:
 end
diff --git a/app/controllers/compound_metric_configurations_controller.rb b/app/controllers/compound_metric_configurations_controller.rb
index 6fd2869..28b6bcc 100644
--- a/app/controllers/compound_metric_configurations_controller.rb
+++ b/app/controllers/compound_metric_configurations_controller.rb
@@ -1,12 +1,10 @@
 class CompoundMetricConfigurationsController < BaseMetricConfigurationsController
-  METRIC_TYPE = 'CompoundMetricSnapshot'
-
   before_action :set_metric_configurations, only: [:new, :edit]
 
   protected
 
   def set_metric!
-    @metric_configuration.metric.type = 'CompoundMetricSnapshot'
+    @metric_configuration.metric.type = metric_type
   end
 
   def metric_configuration_params
@@ -16,4 +14,8 @@ class CompoundMetricConfigurationsController < BaseMetricConfigurationsControlle
   def set_metric_configurations
     @metric_configurations = MetricConfiguration.metric_configurations_of(@kalibro_configuration.id)
   end
+
+  def metric_type
+    'CompoundMetricSnapshot'
+  end
 end
diff --git a/app/controllers/hotspot_metric_configurations_controller.rb b/app/controllers/hotspot_metric_configurations_controller.rb
index 0bc3b90..9d6477f 100644
--- a/app/controllers/hotspot_metric_configurations_controller.rb
+++ b/app/controllers/hotspot_metric_configurations_controller.rb
@@ -1,6 +1,4 @@
 class HotspotMetricConfigurationsController < BaseMetricConfigurationsController
-  METRIC_TYPE = 'HotspotMetricSnapshot'
-
   skip_before_action :set_reading_group!
 
   def metric_configuration_params
@@ -12,4 +10,10 @@ class HotspotMetricConfigurationsController < BaseMetricConfigurationsController
   def render_failure_html(format)
     format.html { redirect_to kalibro_configuration_path(@kalibro_configuration.id) }
   end
+
+  protected
+
+  def metric_type
+    'HotspotMetricSnapshot'
+  end
 end
diff --git a/app/controllers/metric_configurations_controller.rb b/app/controllers/metric_configurations_controller.rb
index d80e48b..0340164 100644
--- a/app/controllers/metric_configurations_controller.rb
+++ b/app/controllers/metric_configurations_controller.rb
@@ -1,6 +1,4 @@
 class MetricConfigurationsController < BaseMetricConfigurationsController
-  METRIC_TYPE = 'NativeMetricSnapshot'
-
   before_action :set_reading_groups!, only: [:new, :edit]
 
   def new
@@ -19,6 +17,10 @@ class MetricConfigurationsController < BaseMetricConfigurationsController
     params.require(:metric_configuration).permit(:reading_group_id, :weight, :aggregation_form)
   end
 
+  def metric_type
+    'NativeMetricSnapshot'
+  end
+
   private
 
   def set_reading_groups!
--
libgit2 0.21.2