diff --git a/DependencyInjection/FOQElasticaExtension.php b/DependencyInjection/FOQElasticaExtension.php
index b26c30a..92310cc 100644
--- a/DependencyInjection/FOQElasticaExtension.php
+++ b/DependencyInjection/FOQElasticaExtension.php
@@ -187,6 +187,9 @@ class FOQElasticaExtension extends Extension
             if (isset($type['search_analyzer'])) {
                 $this->indexConfigs[$indexName]['config']['mappings'][$name]['search_analyzer'] = $type['search_analyzer'];
             }
+            if (isset($type['index'])) {
+                $this->indexConfigs[$indexName]['config']['mappings'][$name]['index'] = $type['index'];
+            }
         }
     }