diff --git a/oblate/configs.py b/oblate/configs.py
index 569b326..29e7455 100644
--- a/oblate/configs.py
+++ b/oblate/configs.py
@@ -67,7 +67,7 @@ def __get__(self, instance: Optional[GlobalConfig], owner: Type[GlobalConfig]) -
             return self._default
         try:
             return instance._values[self._name]
-        except KeyError:
+        except KeyError:  # pragma: no cover
             return self._default
 
     def __set__(self, instance: GlobalConfig, value: _T) -> None:
@@ -97,14 +97,17 @@ class GlobalConfig:
         'validation_error_cls',
     )
 
-    def __init__(self, **options: Any) -> None:
-        self._values: Dict[str, Any] = {}
+    def __init__(
+            self,
+            *,
+            warn_unsupported_types: bool = True,
+            validation_error_cls: Type[ValidationError] = ValidationError,
+        ) -> None:
 
-        for name, value in options.items():
-            if not name in self.__config_options__:
-                raise TypeError(f'Invalid config {name!r} in GlobalConfig()')
+        self._values: Dict[str, Any] = {}
 
-            self._values[name] = value
+        self.warn_unsupported_types = warn_unsupported_types
+        self.validation_error_cls = validation_error_cls
 
     @cfg_option
     def validation_error_cls(self) -> Type[ValidationError]:
diff --git a/oblate/utils.py b/oblate/utils.py
index ffe71a1..d98ef03 100644
--- a/oblate/utils.py
+++ b/oblate/utils.py
@@ -34,6 +34,7 @@
     'MISSING',
     'current_context',
     'current_field_key',
+    'current_schema',
 )
 
 
@@ -55,6 +56,6 @@ def __bool__(self) -> bool:
 
 ### Context variables ###
 
-current_context: ContextVar[_BaseValueContext] = ContextVar('_current_context')
+current_context: ContextVar[_BaseValueContext] = ContextVar('current_context')
 current_field_key: ContextVar[str] = ContextVar('current_field_key')
 current_schema: ContextVar[Schema] = ContextVar('current_schema')
diff --git a/tests/test_configs.py b/tests/test_configs.py
index 0a548fe..d1f73d8 100644
--- a/tests/test_configs.py
+++ b/tests/test_configs.py
@@ -41,9 +41,6 @@ class CustomValidationError(oblate.ValidationError): ...
     oblate.config = oblate.GlobalConfig(validation_error_cls=CustomValidationError)
     assert oblate.config.validation_error_cls == CustomValidationError
 
-    with pytest.raises(TypeError, match='Invalid config'):
-        oblate.GlobalConfig(invalid_cfg=None)
-
     oblate.config = oblate.GlobalConfig()
     assert oblate.config.validation_error_cls == oblate.ValidationError