diff --git a/tests/test_dates.py b/tests/test_dates.py
index 5be0d16a1..3cd70d3e8 100644
--- a/tests/test_dates.py
+++ b/tests/test_dates.py
@@ -761,7 +761,6 @@ def test_zh_TW_format():
 
 
 def test_format_current_moment(monkeypatch):
-    import datetime as datetime_module
     frozen_instant = datetime.utcnow()
 
     class frozen_datetime(datetime):
@@ -771,7 +770,7 @@ def utcnow(cls):
             return frozen_instant
 
     # Freeze time! Well, some of it anyway.
-    monkeypatch.setattr(datetime_module, "datetime", frozen_datetime)
+    monkeypatch.setattr(dates, "datetime_", frozen_datetime)
     assert dates.format_datetime(locale="en_US") == dates.format_datetime(frozen_instant, locale="en_US")