diff --git a/oxrlib/loaders.py b/oxrlib/loaders.py
index 5213a40df3b28e6172015d89f62a2ee4b624249d..5c802b185725b325e1cc71bc1ed9843bf4abd35c 100644
--- a/oxrlib/loaders.py
+++ b/oxrlib/loaders.py
@@ -4,25 +4,7 @@ import io
 import urllib.request
 import urllib.parse
 
-class LoaderError(Exception):
-    pass
-
-
-class LoaderNoDataError(LoaderError):
-    pass
-
-
-class LoaderBadRequestError(LoaderError):
-    pass
-
-
-class LoaderSourceError(LoaderError):
-    pass
-
-
-class NoLoadersError(Exception):
-    pass
-
+from . import errors
 
 class FileCache:
     def __init__(self, dir_path, filename_pattern):
@@ -34,7 +16,7 @@ class FileCache:
         try:
             return path.open()
         except FileNotFoundError as error:
-            raise LoaderNoDataError(path) from error
+            raise errors.LoaderNoDataError(path) from error
 
 
 class OXRAPIRequest:
@@ -67,11 +49,11 @@ class OXRAPIRequest:
         if 200 <= status_code < 203:
             return response_body
         elif status_code == 404 or status_code == 410:
-            exc_class = LoaderNoDataError
+            exc_class = errors.LoaderNoDataError
         elif status_code >= 500:
-            exc_class = LoaderSourceError
+            exc_class = errors.LoaderSourceError
         else:
-            exc_class = LoaderBadRequestError
+            exc_class = errors.LoaderBadRequestError
         with response_body:
             raise exc_class(url, response_body.read(64 * 1024))
 
@@ -97,13 +79,13 @@ class LoaderChain:
             for loader in self.loaders:
                 try:
                     response = getattr(loader, orig_func.__name__)(*args, **kwargs)
-                except LoaderError as this_error:
+                except errors.LoaderError as this_error:
                     error = this_error
                 else:
                     self.used_loader = loader
                     return response
             else:
-                raise NoLoadersError() if error is None else error
+                raise errors.NoLoadersError() if error is None else error
         return load_wrapper
 
     @_wrap_load_method