diff --git a/Command/AbstractIndexServiceAwareCommand.php b/Command/AbstractIndexServiceAwareCommand.php
index c9825dd4..27b33111 100644
--- a/Command/AbstractIndexServiceAwareCommand.php
+++ b/Command/AbstractIndexServiceAwareCommand.php
@@ -13,10 +13,10 @@
 
 use ONGR\ElasticsearchBundle\DependencyInjection\Configuration;
 use ONGR\ElasticsearchBundle\Service\IndexService;
-use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\DependencyInjection\Container;
+use Symfony\Component\DependencyInjection\ContainerInterface;
 
 abstract class AbstractIndexServiceAwareCommand extends Command
 {
@@ -24,7 +24,7 @@ abstract class AbstractIndexServiceAwareCommand extends Command
 
     const INDEX_OPTION = 'index';
 
-    public function __construct(Container $container)
+    public function __construct(ContainerInterface $container)
     {
         $this->container = $container;
         parent::__construct();
@@ -58,7 +58,7 @@ protected function getIndex($name): IndexService
         );
     }
 
-    public function getContainer(): Container
+    public function getContainer(): ContainerInterface
     {
         return $this->container;
     }
diff --git a/DependencyInjection/Compiler/MappingPass.php b/DependencyInjection/Compiler/MappingPass.php
index e0b8ee0f..4bdd3be9 100644
--- a/DependencyInjection/Compiler/MappingPass.php
+++ b/DependencyInjection/Compiler/MappingPass.php
@@ -75,14 +75,23 @@ private function handleDirectoryMapping(ContainerBuilder $container, string $dir
             $indexMetadata = $parser->getIndexMetadata($class);
 
             if (!empty($indexMetadata)) {
-                $indexMetadata['settings'] = array_filter(array_merge_recursive(
-                    $indexMetadata['settings'] ?? [],
-                    [
-                        'number_of_replicas' => $document->numberOfReplicas,
-                        'number_of_shards' => $document->numberOfShards,
-                    ],
-                    $indexesOverride[$namespace]['settings'] ?? []
-                ));
+                $indexMetadata['settings'] = array_filter(
+                    array_replace_recursive(
+                        $indexMetadata['settings'] ?? [],
+                        [
+                            'number_of_replicas' => $document->numberOfReplicas,
+                            'number_of_shards' => $document->numberOfShards,
+                        ],
+                        $indexesOverride[$namespace]['settings'] ?? []
+                    ),
+                    function ($value) {
+                        if (0 === $value) {
+                            return true;
+                        }
+
+                        return (bool)$value;
+                    }
+                );
 
                 $indexSettings = new Definition(
                     IndexSettings::class,
diff --git a/README.md b/README.md
index 1a65ee6e..60ae18e5 100644
--- a/README.md
+++ b/README.md
@@ -138,7 +138,7 @@ class Product
     public $id;
 
     /**
-     * @ES\Property(type="text", "analyzer"="eNgramAnalyzer")
+     * @ES\Property(type="text", analyzer="eNgramAnalyzer")
      */
     public $title;
 
diff --git a/Resources/config/services.yml b/Resources/config/services.yml
index 6b9ac085..7d4bbb3f 100644
--- a/Resources/config/services.yml
+++ b/Resources/config/services.yml
@@ -3,7 +3,9 @@ parameters:
 
 services:
 
-    _defaults: { public: true }
+    _defaults:
+        public: true
+        autowire: true
 
     ONGR\ElasticsearchBundle\Command\:
         resource: '../../Command'
@@ -45,4 +47,4 @@ services:
     ONGR\ElasticsearchBundle\EventListener\TerminateListener:
         arguments: ["@service_container", "%ongr.esb.indexes%"]
         tags:
-            - { name: kernel.event_listener, event: kernel.terminate }
\ No newline at end of file
+            - { name: kernel.event_listener, event: kernel.terminate }
diff --git a/Result/DocumentIterator.php b/Result/DocumentIterator.php
index 7665fe9f..bc767930 100644
--- a/Result/DocumentIterator.php
+++ b/Result/DocumentIterator.php
@@ -41,6 +41,6 @@ protected function convertDocument(array $raw)
         $data = $raw['_source'] ?? $raw['_fields'] ?? null;
         $data['_id'] = $raw['_id'] ?? null;
 
-        return $this->getConverter()->convertArrayToDocument($this->getIndex()->getNamespace(), array_filter($data));
+        return $this->getConverter()->convertArrayToDocument($this->getIndex()->getNamespace(), $data);
     }
 }