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-rw-r--r--sphinx/ext/imgmath.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/sphinx/ext/imgmath.py b/sphinx/ext/imgmath.py
index 14db7e739..87e84f36f 100644
--- a/sphinx/ext/imgmath.py
+++ b/sphinx/ext/imgmath.py
@@ -36,6 +36,7 @@ if False:
from sphinx.application import Sphinx # NOQA
from sphinx.builders import Builder # NOQA
from sphinx.config import Config # NOQA
+ from sphinx.util.typing import unicode # NOQA
logger = logging.getLogger(__name__)