diff --git a/rest_framework/views.py b/rest_framework/views.py
index 5b0622069..4c30029fd 100644
--- a/rest_framework/views.py
+++ b/rest_framework/views.py
@@ -79,9 +79,9 @@ def exception_handler(exc, context):
     to be raised.
     """
     if isinstance(exc, Http404):
-        exc = exceptions.NotFound()
+        exc = exceptions.NotFound(*(exc.args))
     elif isinstance(exc, PermissionDenied):
-        exc = exceptions.PermissionDenied()
+        exc = exceptions.PermissionDenied(*(exc.args))
 
     if isinstance(exc, exceptions.APIException):
         headers = {}