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-rw-r--r--sphinx/ext/imgmath.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/sphinx/ext/imgmath.py b/sphinx/ext/imgmath.py
index 5f9d7a1e2..c35ac293a 100644
--- a/sphinx/ext/imgmath.py
+++ b/sphinx/ext/imgmath.py
@@ -17,6 +17,7 @@ import tempfile
from hashlib import sha1
from os import path
from subprocess import Popen, PIPE
+from typing import TYPE_CHECKING
from docutils import nodes
from six import text_type
@@ -31,8 +32,7 @@ from sphinx.util.osutil import ensuredir, ENOENT, cd
from sphinx.util.png import read_png_depth, write_png_depth
from sphinx.util.pycompat import sys_encoding
-if False:
- # For type annotation
+if TYPE_CHECKING:
from typing import Any, Dict, List, Tuple # NOQA
from sphinx.application import Sphinx # NOQA
from sphinx.builders import Builder # NOQA