diff --git a/synapse/util/__init__.py b/synapse/util/__init__.py
index 511f52534b3c..f157132210dd 100644
--- a/synapse/util/__init__.py
+++ b/synapse/util/__init__.py
@@ -31,13 +31,6 @@
 if typing.TYPE_CHECKING:
     pass
 
-# FIXME Mjolnir imports glob_to_regex from this file, but it was moved to
-#       matrix_common.
-#       As a temporary workaround, we import glob_to_regex here for
-#       compatibility with current versions of Mjolnir.
-# See https://github.com/matrix-org/mjolnir/pull/174
-from matrix_common.regex import glob_to_regex  # noqa
-
 logger = logging.getLogger(__name__)