1 files changed, 2 insertions, 2 deletions
diff --git a/sphinx/util/inventory.py b/sphinx/util/inventory.py
index 9b647ccac..3e5cf19b2 100644
--- a/sphinx/util/inventory.py
+++ b/sphinx/util/inventory.py
@@ -11,6 +11,7 @@ import os
 import re
 import zlib
 from typing import Callable, IO, Iterator
+from typing import TYPE_CHECKING
 
 from sphinx.util import logging
 from sphinx.util.typing import Inventory
@@ -19,8 +20,7 @@ from sphinx.util.typing import Inventory
 BUFSIZE = 16 * 1024
 logger = logging.getLogger(__name__)
 
-if False:
-    # For type annotation
+if TYPE_CHECKING:
     from sphinx.builders import Builder
     from sphinx.environment import BuildEnvironment