diff --git a/netbox/core/filtersets.py b/netbox/core/filtersets.py
index c3fc6c7f7..c1d3cadbf 100644
--- a/netbox/core/filtersets.py
+++ b/netbox/core/filtersets.py
@@ -132,7 +132,9 @@ class JobFilterSet(BaseFilterSet):
         field_name='completed',
         lookup_expr='gte'
     )
-    execution_time = django_filters.DurationFilter()
+    execution_time = django_filters.DurationFilter(
+        label=_('Execution time')
+    )
     execution_time__gte = django_filters.DurationFilter(
         field_name='execution_time',
         lookup_expr='gte',
diff --git a/netbox/utilities/string.py b/netbox/utilities/string.py
index 70cf94819..f19e1d313 100644
--- a/netbox/utilities/string.py
+++ b/netbox/utilities/string.py
@@ -12,9 +12,9 @@ __all__ = (
 def humanize_duration(value):
     """
     Express a timedelta in a human-friendly format. Example: 1h 5m 23s. Returns an empty string
-    for a null or zero-length duration.
+    for None; zero-duration timedeltas render as "0s".
     """
-    if not value:
+    if value is None:
         return ''
 
     # Round to whole seconds and decompose
diff --git a/netbox/utilities/tests/test_string.py b/netbox/utilities/tests/test_string.py
index 0a9c98854..620ee730d 100644
--- a/netbox/utilities/tests/test_string.py
+++ b/netbox/utilities/tests/test_string.py
@@ -7,9 +7,11 @@ from utilities.string import humanize_duration
 
 class HumanizeDurationTest(TestCase):
 
-    def test_none_and_zero(self):
+    def test_none(self):
         self.assertEqual(humanize_duration(None), '')
-        self.assertEqual(humanize_duration(timedelta(0)), '')
+
+    def test_zero_duration(self):
+        self.assertEqual(humanize_duration(timedelta(0)), '0s')
 
     def test_seconds_only(self):
         self.assertEqual(humanize_duration(timedelta(seconds=45)), '45s')