diff --git a/Admin/Install/Navigation.php b/Admin/Install/Navigation.php
index 8bc62f2..9d781e8 100644
--- a/Admin/Install/Navigation.php
+++ b/Admin/Install/Navigation.php
@@ -38,7 +38,7 @@ class Navigation
      */
     public static function install(string $path = null, DatabasePool $dbPool = null) : void
     {
-        $navData = json_decode(file_get_contents(__DIR__ . '/Navigation.install.json'), true);
+        $navData = \json_decode(file_get_contents(__DIR__ . '/Navigation.install.json'), true);
 
         $class = '\\Modules\\Navigation\\Admin\\Installer';
         /** @var $class \Modules\Navigation\Admin\Installer */
diff --git a/Models/ProjectMapper.php b/Models/ProjectMapper.php
index 469a0eb..1d489ea 100644
--- a/Models/ProjectMapper.php
+++ b/Models/ProjectMapper.php
@@ -36,7 +36,7 @@ class ProjectMapper extends DataMapperAbstract
     /**
      * Columns.
      *
-     * @var array
+     * @var array<string, array<string, string>>
      * @since 1.0.0
      */
     protected static $columns = [
@@ -58,7 +58,7 @@ class ProjectMapper extends DataMapperAbstract
     /**
      * Has many relation.
      *
-     * @var array
+     * @var array<string, array<string, string|null>>
      * @since 1.0.0
      */
     protected static $hasMany = [
@@ -79,7 +79,7 @@ class ProjectMapper extends DataMapperAbstract
     /**
      * Has one relation.
      *
-     * @var array
+     * @var array<string, array<string, string>>
      * @since 1.0.0
      */
     protected static $ownsOne = [