diff --git a/src/EnumRegistry.php b/src/EnumRegistry.php
index 0c24480..27c150d 100644
--- a/src/EnumRegistry.php
+++ b/src/EnumRegistry.php
@@ -15,7 +15,7 @@ final class EnumRegistry
     /**
      * @var EnumInterface[]
      */
-    private $enums;
+    private $enums = [];
 
     /**
      * @param EnumInterface $enum
diff --git a/tests/Unit/EnumRegistryTest.php b/tests/Unit/EnumRegistryTest.php
index 60ad215..2acf758 100644
--- a/tests/Unit/EnumRegistryTest.php
+++ b/tests/Unit/EnumRegistryTest.php
@@ -33,7 +33,13 @@ public function testGetInvalidException(): void
         $registry->get('type');
     }
 
-    public function testAddNominal(): void
+    public function testEmpty(): void
+    {
+        $registry = new EnumRegistry();
+        self::assertSame([], $registry->all());
+    }
+
+    public function testNominal(): void
     {
         $translator = new Translator([]);
         $state = new StateEnum();