diff --git a/pungi/checks.py b/pungi/checks.py
index f638f008..6f2d3c83 100644
--- a/pungi/checks.py
+++ b/pungi/checks.py
@@ -450,9 +450,9 @@ def _extend_with_default_and_alias(validator_class, offline=False):
     def is_string_type(checker, instance):
         return isinstance(instance, six.string_types)
 
-    type_checker = validator_class.TYPE_CHECKER.redefine_many(
-        {"array": is_array, "regex": is_string_type, "url": is_string_type}
-    )
+    # type_checker = draft4_type_checker.redefine_many(
+    #     {"array": is_array, "regex": is_string_type, "url": is_string_type}
+    # )
 
     return jsonschema.validators.extend(
         validator_class,
@@ -464,7 +464,7 @@ def _extend_with_default_and_alias(validator_class, offline=False):
             "additionalProperties": _validate_additional_properties,
             "anyOf": _validate_any_of,
         },
-        type_checker=type_checker,
+        # type_checker=type_checker,
     )