diff --git a/radicale/auth/__init__.py b/radicale/auth/__init__.py
index baf9839b..623b2064 100644
--- a/radicale/auth/__init__.py
+++ b/radicale/auth/__init__.py
@@ -29,11 +29,10 @@
 
 """
 
-from typing import Sequence, Tuple, Union
+from typing import Sequence, Set, Tuple, Union
 
 from radicale import config, types, utils
 from radicale.log import logger
-from typing import Set
 
 INTERNAL_TYPES: Sequence[str] = ("none", "remote_user", "http_x_remote_user",
                                  "denyall",
diff --git a/radicale/rights/__init__.py b/radicale/rights/__init__.py
index 5503ea9d..7aec9d4e 100644
--- a/radicale/rights/__init__.py
+++ b/radicale/rights/__init__.py
@@ -32,13 +32,10 @@
 
 """
 
-from typing import Sequence
+from typing import Sequence, Set
 
 from radicale import config, utils
 
-from typing import Set
-
-
 INTERNAL_TYPES: Sequence[str] = ("authenticated", "owner_write", "owner_only",
                                  "from_file")