diff --git a/tests/Drafts/Draft3Test.php b/tests/Drafts/Draft3Test.php
index 4a744441..1942a3b1 100644
--- a/tests/Drafts/Draft3Test.php
+++ b/tests/Drafts/Draft3Test.php
@@ -16,6 +16,9 @@
  */
 class Draft3Test extends BaseDraftTestCase
 {
+    protected $schemaSpec = 'http://json-schema.org/draft-03/schema#';
+    protected $validateSchema = true;
+
     /**
      * {@inheritdoc}
      */
diff --git a/tests/Drafts/Draft4Test.php b/tests/Drafts/Draft4Test.php
index a4508b0f..54eee4c4 100644
--- a/tests/Drafts/Draft4Test.php
+++ b/tests/Drafts/Draft4Test.php
@@ -14,6 +14,9 @@
  */
 class Draft4Test extends BaseDraftTestCase
 {
+    protected $schemaSpec = 'http://json-schema.org/draft-04/schema#';
+    protected $validateSchema = true;
+
     /**
      * {@inheritdoc}
      */