diff --git a/app/lib/carto/bano/address_retriever.rb b/app/lib/carto/bano/address_retriever.rb
index 83fb03de3..895320adc 100644
--- a/app/lib/carto/bano/address_retriever.rb
+++ b/app/lib/carto/bano/address_retriever.rb
@@ -25,8 +25,8 @@ module Carto
           return []
         end
 
-        result['features'].inject([]) do |acc, feature|
-          acc.push feature['properties']['label']
+        result['features'].map do |feature|
+          feature['properties']['label']
         end
       rescue TypeError, JSON::ParserError
         []
diff --git a/app/lib/carto/sgmap/cadastre/adapter.rb b/app/lib/carto/sgmap/cadastre/adapter.rb
index 6c49a9af3..ae9d0bce5 100644
--- a/app/lib/carto/sgmap/cadastre/adapter.rb
+++ b/app/lib/carto/sgmap/cadastre/adapter.rb
@@ -8,11 +8,11 @@ class CARTO::SGMAP::Cadastre::Adapter
   end
 
   def to_params
-    data_source[:features].inject([]) do |acc, feature|
+    data_source[:features].map do |feature|
       tmp = filter_properties feature[:properties]
       tmp[:geometry] = feature[:geometry]
 
-      acc << tmp
+      tmp
     end
   end
 
diff --git a/app/models/champ.rb b/app/models/champ.rb
index d5932bef6..82e14e40e 100644
--- a/app/models/champ.rb
+++ b/app/models/champ.rb
@@ -48,15 +48,15 @@ class Champ < ActiveRecord::Base
   end
 
   def self.regions
-    JSON.parse(Carto::GeoAPI::Driver.regions).sort_by { |e| e['nom'] }.inject([]) { |acc, liste| acc.push(liste['nom']) }
+    JSON.parse(Carto::GeoAPI::Driver.regions).sort_by { |e| e['nom'] }.map { |liste| liste['nom'] }
   end
 
   def self.departements
-    JSON.parse(Carto::GeoAPI::Driver.departements).inject([]) { |acc, liste| acc.push(liste['code'] + ' - ' + liste['nom']) }.push('99 - Étranger')
+    JSON.parse(Carto::GeoAPI::Driver.departements).map { |liste| liste['code'] + ' - ' + liste['nom'] }.push('99 - Étranger')
   end
 
   def self.pays
-    JSON.parse(Carto::GeoAPI::Driver.pays).inject([]) { |acc, liste| acc.push(liste['nom']) }
+    JSON.parse(Carto::GeoAPI::Driver.pays).map { |liste| liste['nom'] }
   end
 
   def to_s
diff --git a/app/services/module_api_carto_service.rb b/app/services/module_api_carto_service.rb
index e1120c316..492a2543d 100644
--- a/app/services/module_api_carto_service.rb
+++ b/app/services/module_api_carto_service.rb
@@ -32,10 +32,10 @@ class ModuleApiCartoService
   end
 
   def self.generate_cadastre coordinates
-    (coordinates.inject([]) { |acc, coordinate|
-      acc << CARTO::SGMAP::Cadastre::Adapter.new(
+    coordinates.flat_map do |coordinate|
+      CARTO::SGMAP::Cadastre::Adapter.new(
         coordinate.map { |element| [element['lng'], element['lat']] }
       ).to_params
-    }).flatten
+    end
   end
 end