diff --git a/.scrutinizer.yml b/.scrutinizer.yml
index 56b321e..ca92884 100644
--- a/.scrutinizer.yml
+++ b/.scrutinizer.yml
@@ -3,9 +3,9 @@ filter:
         - 'Configuration/*'
         - 'Documentation/*'
         - 'Resources/*'
+        - 'Tests/*'
     paths:
         - 'Classes/*'
-        - 'Tests/*'
 tools:
 
     php_cpd:
diff --git a/Classes/Domain/Index/TcaIndexer/RelationResolver.php b/Classes/Domain/Index/TcaIndexer/RelationResolver.php
index 1ece8ec..2dd5dd7 100644
--- a/Classes/Domain/Index/TcaIndexer/RelationResolver.php
+++ b/Classes/Domain/Index/TcaIndexer/RelationResolver.php
@@ -164,7 +164,12 @@ class RelationResolver implements Singleton
     {
         foreach ($items as $item) {
             if ($item[1] === $value) {
-                return LocalizationUtility::translate($item[0], '');
+                $newValue = LocalizationUtility::translate($item[0], '');
+
+                if ($newValue === null) {
+                    return '';
+                }
+                return $newValue;
             }
         }
 
diff --git a/Classes/Domain/Index/TcaIndexer/TcaTableService.php b/Classes/Domain/Index/TcaIndexer/TcaTableService.php
index ddf8e00..3f2d697 100644
--- a/Classes/Domain/Index/TcaIndexer/TcaTableService.php
+++ b/Classes/Domain/Index/TcaIndexer/TcaTableService.php
@@ -43,7 +43,7 @@ class TcaTableService
     protected $tableName;
 
     /**
-     * @var ConfigurationContaineInterfacer
+     * @var ConfigurationContainerInterface
      */
     protected $configuration;
 
@@ -69,7 +69,7 @@ class TcaTableService
 
     /**
      * @param string $tableName
-     * @param ConfigurationContainer $configuration
+     * @param ConfigurationContainerInterface $configuration
      */
     public function __construct(
         $tableName,