diff --git a/src/humanize/time.py b/src/humanize/time.py
index 6a18d4a..0f0ca17 100644
--- a/src/humanize/time.py
+++ b/src/humanize/time.py
@@ -433,7 +433,7 @@ def _suppress_lower_units(min_unit: Unit, suppress: typing.Iterable[Unit]) -> se
 
 
 def precisedelta(
-    value: dt.timedelta | int,
+    value: dt.timedelta | int | None,
     minimum_unit: str = "seconds",
     suppress: typing.Iterable[str] = (),
     format: str = "%0.2f",
diff --git a/tests/test_time.py b/tests/test_time.py
index 5f8da7a..d37fb6a 100644
--- a/tests/test_time.py
+++ b/tests/test_time.py
@@ -629,6 +629,8 @@ def test_precisedelta_suppress_units(
 
 
 def test_precisedelta_bogus_call() -> None:
+    assert humanize.precisedelta(None) == "None"
+
     with pytest.raises(ValueError):
         humanize.precisedelta(1, minimum_unit="years", suppress=["years"])